Pippa Middleton and her husband, James Matthews, welcomed their first child together

The 35-year-old gave birth at St. Mary’s Hospital in London. “James and Pippa have had a baby boy. He was born Monday 15th October at 1:58 p.m., weighing 8 lbs and 9 oz,” Middleton’s rep told Us Weekly. “Everyone is delighted and Mother and baby are doing well.”

Sources say her sister, Kate, and brother-in-law, Prince William, are thrilled for Pippa and James.

Middleton confirmed the pregnancy in June and talked about working out during her first trimester. “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 wrote in a guest column for the U.K.’s Waitrose magazine at the time.

Pippa said that because she and Matthews kept their pregnancy a secret during the “early months” she had to create her own work out regimen, rather than seeking out professional advice.

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Middleton originally wed the race car driver in May 2017. Three months later, they were reportedly “trying for a baby. Their baby news comes just days after the couple attended Princess Eugenie‘s wedding to Jack Brooksbank and one day after it was announced that Prince Harry and Duchess Meghan are expecting a child.