Pippa Middleton confirms pregnancy with James Matthews

It’s official! Pippa Middleton finally confirmed that she and husband James Matthews are expecting their first child.

The writer, 34, opened up about her first trimester in a guest column for the U.K.’s Waitrosemagazine. “I’m fanatical about sport and have looked at loads of books and websites on exercise during pregnancy but have been disappointed by the limited technical information on what you can and can’t do,” she penned, later explaining that she’s needed to tweak her workout regime to accommodate her changing body. “And this ben my first pregnancy, I had so many questions I felt were still unanswered.”

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Pippa Middleton and James Matthews together
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Pippa Middleton and James Matthews together
Pippa Matthews, center, James Matthews, center left, and James Middleton, second right, arrive to attend the wedding of Princess Eugenie of York and Jack Brooksbank at St George’s Chapel, Windsor Castle, near London, England, Friday Oct. 12, 2018. (Adrian Dennis, Pool via AP)
WINDSOR, ENGLAND - OCTOBER 12: James Matthews and Pippa Middleton attend the wedding of Princess Eugenie of York and Jack Brooksbank at St George's Chapel in Windsor Castle on October 12, 2018 in Windsor, England. (Photo by Pool/Samir Hussein/WireImage)
Pippa Middleton and her husband James Matthews arrive for the christening service of Prince Louis at the Chapel Royal, St James's Palace, London, Monday, July 9, 2018. (Dominic Lipinski/Pool Photo via AP)
Photo by: KGC-520/STAR MAX/IPx 2018 7/13/18 Pippa Middleton and James Matthews arrive at The All England tennis club in Wimbledon for the Mens Semi Final.
PARIS, FRANCE - MAY 27: Pippa Middleton and her husband James Matthews are seen at the French Open at Roland Garros on May 27, 2018 in Paris, France. (Photo by Bertrand Rindoff Petroff/Pierre Suu/Getty Images)
Pippa Matthews and James Middleton sit in the Royal Box on Centre Court on the fourth day of the Wimbledon Tennis Championships in London, Thursday July 5, 2018. (AP Photo/Tim Ireland)
LONDON, ENGLAND - JULY 14: Pippa Middleton & James Matthews seen at Day 11 of Wimbledon 2017 on July 14, 2017 in London, England. (Photo by HGL/GC Images)
LONDON, ENGLAND - JULY 14: Pippa Middleton and James Matthews attend day eleven of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 14, 2017 in London, United Kingdom. (Photo by Karwai Tang/WireImage)
LONDON, ENGLAND - JUNE 27: Pippa Middleton (L) and James Matthews attend The Miles Frost Fund party at Bunga Bunga Covent Garden on June 27, 2017 in London, England. (Photo by David M Benett/Dave Benett/Getty Images)
LONDON, ENGLAND - JUNE 27: Pippa Middleton (L) and James Matthews attend The Miles Frost Fund party at Bunga Bunga Covent Garden on June 27, 2017 in London, England. (Photo by David M Benett/Dave Benett/Getty Images)
Pippa Middleton (L) and her husband James Matthews (R) arrive at Rose Bay Wharf by sea plane in Sydney on May 31, 2017. Pippa and Matthews, who married on May 20, 2017, are visiting Sydney on their honeymoon. / AFP PHOTO / SAEED KHAN (Photo credit should read SAEED KHAN/AFP/Getty Images)
JUNE 1, 2017: DARWIN, NT - (EUROPE AND AUSTRALASIA OUT) Newly married James Matthews and Pippa Middleton arrive into Darwin International Airport in Darwin, Northern Territory. (Photo by Glenn Campbell/Newspix/Getty Images)
ENGLEFIELD GREEN, UNITED KINGDOM - MAY 20: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) James Matthews and Pippa Middleton leave St Mark's Church after their wedding on May 20, 2017 in Englefield Green, England. (Photo by Max Mumby/Indigo/Getty Images)
ENGLEFIELD GREEN, UNITED KINGDOM - MAY 20: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) James Matthews and Pippa Middleton leave St Mark's Church after their wedding on May 20, 2017 in Englefield Green, England. (Photo by Max Mumby/Indigo/Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Pippa Middleton and James Matthews leave after getting married at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by Pool/Samir Hussein/WireImage)
ENGLEFIELD GREEN, UNITED KINGDOM - MAY 20: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) James Matthews and Pippa Middleton leave St Mark's Church after their wedding on May 20, 2017 in Englefield Green, England. (Photo by Max Mumby/Indigo/Getty Images)
BUCKLEBURY, BERKSHIRE - DECEMBER 25: Pippa Middleton and James Matthews attend church on Christmas Day on December 25, 2016 in Bucklebury, Berkshire. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - JULY 06: Pippa Middleton and James Matthews attend day nine of the Wimbledon Tennis Championships at Wimbledon on July 06, 2016 in London, England. (Photo by Karwai Tang/WireImage)
LONDON, ENGLAND - JULY 06: Pippa Middleton and James Matthews attend day nine of the Wimbledon Tennis Championships at Wimbledon on July 06, 2016 in London, England. (Photo by Karwai Tang/WireImage)
Photo by: KGC-520/STAR MAX/IPx 2018 7/11/18 Pippa Middleton and her brother James Middleton arrive at Wimbledon for the tennis this afternoon.
Pippa and James Matthews in the stands on centre court on day eleven of the Wimbledon Championships at the All England Lawn Tennis and Croquet Club, Wimbledon. (Photo by Steven Paston/PA Images via Getty Images)
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Middleton added that because she and Matthews, 42, kept their pregnancy under wraps during the “early months,” she couldn’t turn to fitness instructors for guidance and she had to create her own routine. “So I decided to use my own initiative and adapted my current exercise routine, adjusting my the weight and intensity to what felt right for me,” she explained. “I work out for 45 minutes, three to four times a week depending on my energy levels, but ensured that the routines I did were lighter than usual … I’ve noticed my body change but through exercise, I feel it’s being strengthened.”

Us Weekly confirmed back in April that Middleton and Matthews were expecting. A source told Us at the time that the mom-to-be looks to her older sister, Duchess Kate, for parenting advice.

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See Kate and Pippa Middleton together at Pippa's wedding
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See Kate and Pippa Middleton together at Pippa's wedding
ENGLEFIELD GREEN, ENGLAND - MAY 20: Pippa Middleton and Catherine, Duchess of Cambridge attend the wedding of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by UK Press Pool/UK Press via Getty Images)
ENGLEFIELD, ENGLAND - MAY 20: Catherine, Duchess of Cambridge, right, arranges the train of her sister of her sister Pippa Middleton as she arrives with her father Michael Middleton for her wedding to James Matthews at St Mark's Churchon May 20, 2017 in Englefield, England. Middleton, the sister of Catherine, Duchess of Cambridge is to marry hedge fund manager James Matthews in a ceremony Saturday where her niece and nephew Prince George and Princess Charlotte are in the wedding party, along with sister Kate and princes Harry and William. (Photo by Kirsty Wigglesworth - Pool/Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Pippa Middleton and James Matthews smile as they are joined by Catherine, Duchess of Cambridge, right, after their wedding at St Mark's Church onMay 20, 2017 in Englefield, England(Photo by Arthur Edwards - WPA Pool/Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge attend the wedding of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by UK Press Pool/UK Press via Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge attend the wedding of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by UK Press Pool/UK Press via Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge attend the wedding of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by UK Press Pool/UK Press via Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Catherine, Duchess of Cambridge attends the wedding of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by UK Press Pool/UK Press via Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Catherine, Duchess of Cambridge attends the wedding of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by UK Press Pool/UK Press via Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Michael Middleton, Pippa Middleton and Catherine, Duchess of Cambridge attend the wedding of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by UK Press Pool/UK Press via Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Princess Charlotte of Cambridge, bridesmaid and Catherine, Duchess of Cambridge attend the wedding Of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Pippa Middleton, James Matthews and Catherine, Duchess of Cambridge leave after getting married at the wedding Of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
ENGLEFIELD, ENGLAND - MAY 20: Pippa Middleton and James Matthews smile after their wedding at St Mark's Church on May 20, 2017 in in Englefield, England. Middleton, the sister of Catherine, Duchess of Cambridge married hedge fund manager James Matthews in a ceremony Saturday where her niece and nephew Prince George and Princess Charlotte was in the wedding party, along with sister Kate and princes Harry and William. (Photo by Kirsty Wigglesworth - Pool/Getty Images)
ENGLEFIELD, ENGLAND - MAY 20: Catherine, Duchess of Cambridge, right, walks with the flower boys and girls, including Prince George, second right, and Princess Charlotte after the wedding of Pippa Middleton and James Matthews at St Mark's Church ion May 20, 2017 in in Englefield, England. Middleton, the sister of Catherine, Duchess of Cambridge married hedge fund manager James Matthews in a ceremony Saturday where her niece and nephew Prince George and Princess Charlotte was in the wedding party, along with sister Kate and princes Harry and William. (Photo by Kirsty Wigglesworth - Pool/Getty Images)
ENGLEFIELD, ENGLAND - MAY 20: Pippa Middleton and James Matthews smile after their wedding at St Mark's Church on May 20, 2017 in in Englefield, England. Middleton, the sister of Catherine, Duchess of Cambridge married hedge fund manager James Matthews in a ceremony Saturday where her niece and nephew Prince George and Princess Charlotte was in the wedding party, along with sister Kate and princes Harry and William. (AP Photo/Kirsty Wigglesworth, Pool)
Britain's Catherine, Duchess of Cambridge (R) stands with her children Britain's prince George (L) and Britain's princess Charlotte (2R), following the wedding of her sister Pippa Middleton to James Matthews at St Mark's Church in Englefield, west of London, on May 20, 2017. After turning heads at her sister Kate's wedding to Prince William, Pippa Middleton graduated from bridesmaid to bride on Saturday at a star-studded wedding in an English country church. Middleton married financier James Matthews, 41, at a ceremony attended by the royal couple and tennis star Roger Federer, as she wore a couture dress by British designer Giles Deacon. / AFP PHOTO / POOL / Justin TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
Pippa Middleton (L) and her new husband James Matthews leave St Mark's Church in Englefield, west of London, on May 20, 2017 following their wedding ceremony. After turning heads at her sister Kate's wedding to Prince William, Pippa Middleton graduated from bridesmaid to bride on Saturday at a star-studded wedding in an English country church. The 33-year-old married financier James Matthews, 41, at a ceremony attended by the royal couple and tennis star Roger Federer, wearing a couture dress by British designer Giles Deacon. / AFP PHOTO / POOL / Justin TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
Pippa Middleton (R) kisses her new husband James Matthews, following their wedding ceremony at St Mark's Church in Englefield, west of London, on May 20, 2017. After turning heads at her sister Kate's wedding to Prince William, Pippa Middleton graduated from bridesmaid to bride on Saturday at a star-studded wedding in an English country church. The 33-year-old married financier James Matthews, 41, at a ceremony attended by the royal couple and tennis star Roger Federer, wearing a couture dress by British designer Giles Deacon. / AFP PHOTO / POOL / Justin TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Catherine, Duchess of Cambridge stands with her daughter Princess Charlotte of Cambridge, a bridesmaid, following the wedding of her sister Pippa Middleton to James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by Justin Tallis - WPA Pool)
Pippa Middleton and her new husband James Matthews leave St Mark's Church in Englefield, west of London, on May 20, 2017 following their wedding ceremony. After turning heads at her sister Kate's wedding to Prince William, Pippa Middleton graduated from bridesmaid to bride on Saturday at a star-studded wedding in an English country church. Middleton, married financier James Matthews, 41, at a ceremony attended by the royal couple and tennis star Roger Federer, as she wore a couture dress by British designer Giles Deacon. / AFP PHOTO / POOL AND AFP PHOTO / Justin TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
ENGLEFIELD GREEN, ENGLAND - MAY 20: Princess Charlotte of Cambridge, bridesmaid and Catherine, Duchess of Cambridge attend the wedding Of Pippa Middleton and James Matthews at St Mark's Church on May 20, 2017 in Englefield Green, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
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“Kate has so much knowledge to share,” the insider told Us of the royal, 36, who shares son Prince George, 4, Princess Charlotte, 3, and Prince Louis, 2 months, with husband Prince William. “She’s a walking baby encyclopedia at this point!”

The socialite and the race car driver tied the knot in May 2017, and three months later, a source told Us that the newlyweds were “trying for a baby.”

Middleton flaunted her baby bump in a floral green dress at Duchess Meghan and Prince Harry’s May 19 nuptials at Windsor Castle.

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