Pippa Middleton welcomes first child with husband James Matthews

Pippa Middleton is a mom!

The sister of Duchess of Cambridge Kate Middleton welcomed her first child -- a boy! -- with husband James Matthews on Monday on Monday at 1:58 p.m. local time, People confirmed on Tuesday. 

"Everyone is delighted and mother and baby are doing well," her rep told the outlet of the newborn, who weighs 8 lbs. 9 oz.

Middleton gave birth to her baby boy at the Lindo Wing, where her royal sister delivered her three children, as well. The ultra-exclusive maternity unit offers suites starting around 7,500 pounds per night.

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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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Matthews, 41, and Middleton, 35, got married on May 20, 2017 and announced that they were expecting this past June, though first reports that she was expecting emerged a few months earlier in April. She has reportedly had a seamless pregnancy and has kept up her fitness regimen throughout, while also turning to meditation and swimming to stay calm.

The baby marks Kate Middleton becoming an aunt for the first time. It also comes on the heels of Meghan Markle and Prince Harry announcing on Monday that they, too, are expecting their first child together, due in the spring of 2019.

Pippa surprised many by attending Princess Eugenie's wedding to Jack Brooksbank last Friday, just days before she gave birth. She prompted speculation that she was about to give birth on Monday after she and Matthews were spotted walking into the Lindo Wing, with her husband carrying two overnight bags into the maternity ward.

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Pippa Middleton at Princess Eugenie's wedding
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Pippa Middleton at Princess Eugenie's wedding
Philippa Matthews (Middleton) (C), James Middleton (CR), the siblings of Britain's Catherine, Duchess of Cambridge, and Pippa's husband James Matthews (CL) arrive to attend the wedding of Britain's Princess Eugenie of York to Jack Brooksbank at St George's Chapel, Windsor Castle, in Windsor, on October 12, 2018. (Photo by Adrian DENNIS / various sources / AFP) (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
WINDSOR, ENGLAND - OCTOBER 12: James Matthews (C-L), Pippa Middleton (C) and James Middleton (C-R) arrive ahead of the wedding of Princess Eugenie of York and Mr. Jack Brooksbank at St. George's Chapel on October 12, 2018 in Windsor, England. (Photo by Andrew Matthews - WPA Pool/Getty Images)
WINDSOR, ENGLAND - OCTOBER 12: James Matthews and wife Pippa Middleton (C) arrive ahead of the wedding of Princess Eugenie of York and Mr. Jack Brooksbank at St. George's Chapel on October 12, 2018 in Windsor, England. (Photo by Adrian Dennis - WPA Pool/Getty Images)
Pippa Matthews (Middleton) arrives to attend the wedding of Britain's Princess Eugenie of York to Jack Brooksbank at St George's Chapel, Windsor Castle, in Windsor, on October 12, 2018. (Photo by Andrew Matthews / POOL / AFP) (Photo credit should read ANDREW MATTHEWS/AFP/Getty Images)
WINDSOR, ENGLAND - OCTOBER 12: (L-R) James Middleton, Pippa Middleton and James Matthews arrive for the wedding of Princess Eugenie of York and Jack Brooksbank at St George's Chapel, Windsor Castle on October 12, 2018 in Windsor, England. (Photo by Alastair Grant - WPA Pool/Getty Images)
WINDSOR, ENGLAND - OCTOBER 12: Pippa Middleton attends the wedding of Princess Eugenie of York to Jack Brooksbank at St. George's Chapel on October 12, 2018 in Windsor, England. (Photo by (Photo by Mark Large - WPA Pool/Getty Images)
Pippa Matthews (Middleton), sister of Britain's Catherine, Duchess of Cambridge, (C) leavse after attending the wedding of Britain's Princess Eugenie of York and Jack Brooksbank at St George's Chapel, Windsor Castle, in Windsor, on October 12, 2018. (Photo by ADRIAN DENNIS / various sources / AFP) (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
Pippa Matthews (Middleton), sister of Britain's Catherine, Duchess of Cambridge, (C) leaves after attending the wedding of Britain's Princess Eugenie of York and Jack Brooksbank at St George's Chapel, Windsor Castle, in Windsor, on October 12, 2018. (Photo by Gareth Fuller / various sources / AFP) (Photo credit should read GARETH FULLER/AFP/Getty Images)
WINDSOR, ENGLAND - OCTOBER 12: Pippa Middleton after the wedding of Princess Eugenie to Jack Brooksbank at St George's Chapel in Windsor Castle on October 12, 2018 in Windsor, England. (Photo by Matthew Crossick - WPA Pool/Getty Images)
WINDSOR, ENGLAND - OCTOBER 12: Pippa Matthews (Middleton), sister of Britain's Catherine, Duchess of Cambridge, (C) leavse after attending the wedding of Britain's Princess Eugenie of York and Jack Brooksbank at St George's Chapel, Windsor Castle on October 12, 2018 in Windsor, England. (Photo by Adrian Dennis - WPA Pool/Getty Images)
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