Um, can we take a second to talk about Pippa Middleton?! Duchess Kate’s sister just welcomed her first child, Arthur Michael William Matthews, 11 weeks ago, and on Jan. 2 she was photographed frolicking in the waves of St. Barts in a bikini. Suffice it to say, we cannot believe how amazing she looks already! Scroll through the gallery to see her unbelievable post-baby body.