Sexy Celebrity Legs -- Guess Who!

Strut your stuff and walk up to this sexy celeb showin' off her long stems ... Can you guess who she is? We'll hit you with a few clues, but then it's on you to name the unknown star!

She's a "Gone Girl" who's been on the big screen with Ben Affleck and Zac Efron. When she's not a doting mother to her kiddo, catch her walkin' her German Shepherd mix!