Pippa Middleton Dons Red Bikini While Vacationing In St. Barts

Pippa Middleton showed off her incredible figure while on vacation with her family in St. Barts over the weekend. According to E! News, Duchess Kate’s sister was spotted in a red bikini, frolicking in the sea along with her brother, James Middleton, as their mom, Carole Middleton, was soaking up some sun nearby.

The 31-year-old socialite has been working hard to keep herself in shape. She recently completed the Safaricom Marathon in Kenya, and she’s currently training for a major swimming competition. The Otillo Swim-Run World Championship takes place in Sweden on September 7. Pippa is part of a team that will race from Sandhamn to Uto. According to People Magazine, it’s one of the toughest endurance competitions in the world.

Pippa Middleton really loves to exercise, and is always pushing herself to the limits. When she isn’t running or swimming, she’s usually participating in some other kind of physical activity. She has said that she really enjoys the health benefits she receives from working out, and staying fit. And, of course, she looks great!

“It’s not just marathons and other highly competitive athletic events that have given her such toned muscles. Pippa also keeps up with her tennis game and Pilates as well as going for runs on her downtime. Even when she isn’t training for an event she still makes sure she gets in her routine,” reports E! News.

Pippa Middleton will undoubtedly be challenging herself in the Otillo Swim-Run. Only 35 percent of the participants are women, but Pippa is in fantastic shape, and should do really well.

“It is a massive challenge. You need to be very fit and be mentally strong – she has trained very hard for it,” said the event’s co-founder, Micheal Lemmel, via People Magazine. “I was pleased that she was willing to take on such a big challenge. She is very brave to do so,” he added.

When Pippa Middleton isn’t busy staying working out, she finds some time to spend with her nephew and niece. Known as a “doting aunt,” Pippa is very close to her sister Kate’s kids, George, 2, and Charlotte, 3 months.

[Photo by Anthony Harvey / Getty Images Entertainment]