Just over a year after saying “I do” to the love of her life, James Matthews, Pippa Middleton has officially confirmed they’re expecting their first child together! Sharing the news in a Waitrose magazine column, the Duchess of Cambridge's younger sister revealed how smooth her pregnancy has been, unlike Kate who suffered from serious bouts of morning sickness throughout all three of her pregnancies.

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The British socialite wrote candidly about her first trimester, saying: “I was lucky to pass the 12-week scan without suffering from morning sickness. That meant I was able to carry on as normal.” Unfortunately for Kate, her dealings with hyperemesis gravidarum often forced her to withdraw from royal duties.

Pippa and James attended the 2018 French Open in Paris. Photo: © Bertrand Rindoff Petroff/Pierre Suu/Getty Images

The sporty 34-year-old also touched on some of the life changes she’s faced during her pregnancy, one of them being having to overhaul her gym routine. “When I learned the happy news that I was pregnant, I realized I needed to adjust my 4 to 5-day-a-week [fitness] routine," wrote Pippa, who is an avid marathoner and sports fanatic. She added: "I’ve noticed my body change and weight increase, but through effective exercise and sports I feel that it’s being strengthened to support a healthy pregnancy, birth, and recovery."

Reports of Pippa's pregnancy surfaced shortly after the Duchess of Cambridge gave birth to her third child, Prince Louis, on April 23. The brunette beauty stayed mum on the rumours but showed off her growing bump in a green floral dress by The Fold to Prince Harry and Meghan Markle's wedding in May.

Pippa and James's new arrival will be Carole and Michael Middleton's fourth grandchild, and Prince George, Princess Charlotte and Prince Louis's first cousin.