We told you little sisters are the coolest! On Monday, bikini-clad Pippa Middleton put her physique on display while enjoying a family holiday in St. Barts. Kate Middleton's younger sister took advantage of the warm weather by frolicking in the water with her brother, James, and flaunting her killer body in a skimpy red two-piece on a dock with her mom, Carole. The last time we got a glimpse of Pippa was when she met her newborn niece, Princess Charlotte, back in May, but it's been about a year since we've seen her in a bikini.
Even though her famous sister and brother-in-law have also been keeping a low profile since celebrating Prince George's second birthday in July, it's clear that the entire family has been having an eventful Summer. Keep scrolling to ogle Pippa's insanely gorgeous beach body, and then check out the best bikini moments of 2015 so far.