Pippa Middleton is pretty in pink (with a matching hat) at Wimbledon

Pippa Middleton looks pretty in pink at Wimbledon!

The Duchess of Cambridge's sister attended Day 7 of the British tennis tournament, accompanied by her brother, James Middleton.

Middleton, 35, sported a pale pink Stella McCartney dress topped off with a color-coordinated hat. Her brother also looked chic and oh-so-British in a double-breasted suit and tasseled loafers.

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Pippa Middleton at Wimbledon 2019
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Pippa Middleton at Wimbledon 2019
Pippa Matthews with husband James Matthews on day eleven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
Pippa Matthews on day eleven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Mike Egerton/PA Images via Getty Images)
LONDON, ENGLAND - JULY 12: Pippa Middleton on Centre Court during day eleven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 12, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 12: Pippa Middleton on Centre Court during day eleven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 12, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 12: Pippa Middleton and James Matthews on Centre Court during day eleven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 12, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Pippa Matthews on day eleven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon.
LONDON, ENGLAND - JULY 08: Pippa Middleton and James Middleton attend day seven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
English author Pippa Middleton (2L) and her brother James (L) watch Spain's Rafael Nadal playing Portugal's Joao Sousa during their men's singles fourth round match on the seventh day of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 8, 2019. (Photo by Ben STANSALL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read BEN STANSALL/AFP/Getty Images)
LONDON, ENGLAND - JULY 08: Pippa Middleton and James Middleton attend day seven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 08: Pippa Middleton and James Middleton attend the Royal Box during Day Seven of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Clive Brunskill/Getty Images)
LONDON, ENGLAND - JULY 08: Pippa Middleton attends day seven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Pippa Matthews (left) and brother James Middleton on day seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, London. (Photo by Philip Toscano/PA Images via Getty Images)
LONDON, ENGLAND - JULY 08: Pippa Middleton and James Middleton attend day seven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Pippa Matthews in the royal box of centre court on day seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
Pippa Matthews on day seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, London. (Photo by Philip Toscano/PA Images via Getty Images)
LONDON, ENGLAND - JULY 08: Pippa Middleton attends day seven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 08: James Middleton and Pippa Middleton attend day seven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 08: Pippa Middleton attends day seven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
8th July 2019, The All England Lawn Tennis and Croquet Club, Wimbledon, England, Wimbledon Tennis Tournament, Day 7; Pippa Middleton chats to friends in the Royal Box on centre court (photo by Shaun Brooks/Action Plus via Getty Images)
Pippa Matthews in the royal box of centre court on day seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
8th July 2019, The All England Lawn Tennis and Croquet Club, Wimbledon, England, Wimbledon Tennis Tournament, Day 7; Pippa Middleton attends the play on centre court (photo by Shaun Brooks/Action Plus via Getty Images)
LONDON, ENGLAND - JULY 08: Pippa Middleton and James Middleton attend the Royal Box during Day Seven of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Clive Brunskill/Getty Images)
LONDON, ENGLAND - JULY 08: Pippa Middleton and James Middleton attend day seven of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 08, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Pippa Matthews in the royal box of centre court on day seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
Pippa Middleton on day seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, London. (Photo by Philip Toscano/PA Images via Getty Images)
Pippa Middleton (left) and brother-in-law James Middleton on day seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, London. (Photo by Philip Toscano/PA Images via Getty Images)
Pippa Middleton on day seven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, London. (Photo by Philip Toscano/PA Images via Getty Images)
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The former Kate Middleton's younger sister completed her look with tan sandals and a straw clutch.

Once in the stands, both siblings donned sunglasses as they took in the tennis from the royal box.

Middleton is a big tennis fan and an avid player herself. She even played throughout her pregnancy, as she revealed in an article last year for the British publication Waitrose Weekly. She joked that playing while pregnant had some unexpected advantages.

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Kate Middleton at Wimbledon 2019
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Kate Middleton at Wimbledon 2019
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex in the Royal Box on Centre Court during day twelve of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex in the Royal Box on Centre Court during day twelve of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex in the Royal Box on Centre Court during day twelve of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex in the Royal Box on Centre Court during day twelve of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 13: (L-R) Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex attend the Royal Box during Day twelve of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Shaun Botterill/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex attend the Royal Box during Day twelve of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Shaun Botterill/Getty Images)
Britain's Catherine, Duchess of Cambridge smiles as she meets members of staff ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge smiles as she arrives on a visit ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge (L) meets junior players ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge smiles as she meets junior players ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge arrives for a visit ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge waves to well-wishers as she visits ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge chats to members of staff during a visit ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge smiles as she meets members of staff ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge (L) meets junior players ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge chats to members of staff during a visit ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge smiles as she meets junior players ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge arrives ahead of the Women's Final on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon on July 13, 2019 in London, England. (Photo by Victoria Jones - WPA Pool/Getty Images)
Britain's Catherine, Duchess of Cambridge (L) meets junior players ahead of the Women's Final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Victoria Jones / POOL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read VICTORIA JONES/AFP/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge meets Marion Regan from Hugh Lowe Farm, supplier of Wimbledon strawberries, Gareth Healy of Sir Robert McAlpine building company that built Court One, and Patrick Williams, AELTC Senior Project Manager, ahead of the Women's Final on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon on July 13, 2019 in London, England. (Photo by Victoria Jones - WPA Pool/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge arrives ahead of the Women's Final on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon on July 13, 2019 in London, England. (Photo by Victoria Jones - WPA Pool/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge meets junior players and staff ahead of the Women's Final on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon on July 13, 2019 in London, England. (Photo by Victoria Jones - WPA Pool/Getty Images)
Britain's Catherine, Duchess of Cambridge (L) sits next to the chairman of AELTC Philip Brook in the Royal Box on Centre Court watching Germany's Tatjana Maria playing against Germany's Angelique Kerber at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2019, on the second day of the 2019 Wimbledon Championships tennis tournament. (Photo by GLYN KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
LONDON, ENGLAND - JULY 02: Katie Boulter, Catherine, Duchess of Cambridge and Anne Keothavong (R) smile as they attend day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge and Anne Keothavong (R) smile as they attend day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Katie Boulter, Catherine, Duchess of Cambridge and Anne Keothavong (R) smile as they attend day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Katie Boulter, Catherine, Duchess of Cambridge and Anne Keothavong (R) smile as they attend day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge attend Day two of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Mike Hewitt/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge and Wimbledon Chairman Philip Brook share a joke as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge smiles as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge adjusts her sunglasses as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge smiles as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge smiles as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge reacts as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge claps as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Britain's Catherine (R), Duchess of Cambridge talks to Mrs Gill Brook on Centre Court as they watch Germany's Tatjana Maria playing against Germany's Angelique Kerber at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2019, on the second day of the 2019 Wimbledon Championships tennis tournament. (Photo by GLYN KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge speaks with Wimbledon Chairman Philip Brook as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge shakes hands with Floella Benjaminas she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge claps as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge entera Centre Court as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge speaks to the Wimbledon Chairman Philip Brook in the royal box during Day two of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Matthias Hangst/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge takes to her seat at Centre Court as she attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Britain's Catherine, Duchess of Cambridge (L) is seen on Court 14 watching Britain's Harriet Dart playing against US player Christina McHale at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2019, on the second day of the 2019 Wimbledon Championships tennis tournament. (Photo by GLYN KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge is seen on Court 14 watching Britain's Harriet Dart playing against US player Christina McHale at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2019, on the second day of the 2019 Wimbledon Championships tennis tournament. (Photo by GLYN KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge (2L) is seen on Court 14 watching Britain's Harriet Dart playing against US player Christina McHale at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2019, on the second day of the 2019 Wimbledon Championships tennis tournament. (Photo by GLYN KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge (L) and Anne Keothavong laugh as they attend day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Britain's Catherine, Duchess of Cambridge arrives at Court 14 to watch Britain's Harriet Dart playing against US player Christina McHale at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2019, on the second day of the 2019 Wimbledon Championships tennis tournament. (Photo by Glyn KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Britain's Catherine, Duchess of Cambridge (C) arrives at court 14 at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2019, to watch Britain's Harriet Dart play against US player Christina McHale during their women's singles first round match on the second day of the 2019 Wimbledon Championships tennis tournament. (Photo by Daniel LEAL-OLIVAS / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge is surrounded as she arrives for Day 2 of The Championships - Wimbledon 2019 at the All England Lawn Tennis and Croquet Club on July 2, 2019 in London, England. (Photo by Simon Stacpoole/Offside/Getty Images)
Britain's Catherine, Duchess of Cambridge arrives at court 14 at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2019, to watch Britain's Harriet Dart play against US player Christina McHale during their women's singles first round match on the second day of the 2019 Wimbledon Championships tennis tournament. (Photo by Daniel LEAL-OLIVAS / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge is surrounded as she arrives for Day 2 of The Championships - Wimbledon 2019 at the All England Lawn Tennis and Croquet Club on July 2, 2019 in London, England. (Photo by Simon Stacpoole/Offside/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge is surrounded as she arrives for Day 2 of The Championships - Wimbledon 2019 at the All England Lawn Tennis and Croquet Club on July 2, 2019 in London, England. (Photo by Simon Stacpoole/Offside/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge and Anne Keothavong (R) smile as they attend day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Katie Boulter, Catherine, Duchess of Cambridge and Anne Keothavong (R) smile as they attend day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 02: Catherine, Duchess of Cambridge attends day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 02, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
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"The opposition can get distracted if they know they're matched against someone pregnant (showing good manners)," she wrote. "So in the spirit of competition — now is the time to make the most of them holding back!"

Middleton's Wimbledon appearance comes soon after her sister visited the famed tournament. Last week, the duchess arrived at Wimbledon in a white, buttoned dress with a bow belt.

Meghan, Duchess of Sussex, also made a surprise appearance at Wimbledon last week, stopping by to watch her friend Serena Williams face off against opponent Kaja Juvan.

She kept things casual yet chic in jeans, a black top and white blazer.

A passion for tennis clearly runs in the royal family!

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Meghan Markle at Wimbledon
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Meghan Markle at Wimbledon
LONDON, ENGLAND - JULY 13: Meghan, Duchess of Sussex in the Royal Box on Centre Court during day twelve of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 13: (L-R) Catherine, Duchess of Cambridge, Meghan, Duchess of Sussex and Pippa Middleton attend the Royal Box during Day twelve of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Shaun Botterill/Getty Images)
The Duchess of Cambridge and The Duchess of Sussex on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex in the Royal Box on Centre Court during day twelve of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
The Duchess of Sussex on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
LONDON, ENGLAND - JULY 13: Meghan, Duchess of Sussex in the Royal Box on Centre Court during day twelve of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
The Duchess of Sussex on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
The Duchess of Sussex on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
The Duchess of Sussex alongside Pippa Matthews on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
The Duchess of Cambridge and The Duchess of Sussex on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Adam Davy/PA Images via Getty Images)
Britain's Meghan, Duchess of Sussex takes her seat in the Royal Box on Centre Courtto watch Romania's Simona Halep playing US player Serena Williams during their women's singles final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Ben STANSALL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read BEN STANSALL/AFP/Getty Images)
Britain's Meghan, Duchess of Sussex takes her seat in the Royal Box on Centre Court to watch Romania's Simona Halep playing US player Serena Williams during their women's singles final on day twelve of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 13, 2019. (Photo by Ben STANSALL / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read BEN STANSALL/AFP/Getty Images)
LONDON, ENGLAND - JULY 13: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex attend the Royal Box during Day twelve of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England. (Photo by Shaun Botterill/Getty Images)
The Duchess of Sussex arrives on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Victoria Jones/PA Images via Getty Images)
The Duchess of Sussex arrives on day twelve of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Victoria Jones/PA Images via Getty Images)
Britain's Meghan (C), Duchess of Sussex watches US player Serena Williams playing against Slovakia's Kaja Juvan during their women's singles second round match on the fourth day of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 4, 2019. (Photo by GLYN KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex looks on as Serena Williams (USA) plays Kaja Juvan (SLO) in their Ladies' Singles 2nd Round match on Day 4 of The Championships - Wimbledon 2019 at the All England Lawn Tennis and Croquet Club on July 4, 2019 in London, England. (Photo by Simon Stacpoole/Offside/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex (C) attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
The Duchess of Sussex in the stands of court one to watch the match between Serena Williams and Kaja Juvan on day four of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Mike Egerton/PA Images via Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex (C) attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Duchess of Sussex watching Serena Williams on court one on day four of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Mike Egerton/PA Images via Getty Images)
Duchess of Sussex watching Serena Williams on court one on day four of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Mike Egerton/PA Images via Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex attends day four of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Britain's Meghan (C), Duchess of Sussex applauds after US player Serena Williams beat Slovakia's Kaja Juvan during their women's singles second round match on the fourth day of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 4, 2019. (Photo by Glyn KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
Britain's Meghan (C), Duchess of Sussex applauds after US player Serena Williams beat Slovakia's Kaja Juvan during their women's singles second round match on the fourth day of the 2019 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 4, 2019. (Photo by Glyn KIRK / AFP) / RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex shakes hands with a young wellwisher as she attends day 4 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex smiles as she attends day 4 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Duchess of Sussex after watching Serena Williams on court one on day four of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Mike Egerton/PA Images via Getty Images)
LONDON, ENGLAND - JULY 04: Meghan, Duchess of Sussex smiles as she attends day 4 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 04, 2019 in London, England. (Photo by Karwai Tang/Getty Images)
Duchess of Sussex after watching Serena Williams on court one on day four of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Mike Egerton/PA Images via Getty Images)
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