Pippa Middleton
Credit: Fame Pictures; Splash News

Pippa Middleton knows how to make her summer dresses do double duty! Back in May, Duchess Catherine's younger sister wore a printed Whistles dress paired with a tan leather jacket and matching ballet flats. Yesterday, she brought the look into fall by teaming it with a wooly cardigan, black tights and buckled brown boots. She kept one element the same—her go-to Modalu bag! Tell us: Do you like to give your dresses an autumn update?

Plus, click through the gallery to browse more of Pippa Middleton's latest looks.