Last Night's Look: Love It or Leave It?Check out the head-turning outfits Pippa Middleton, Gwen Stefani and more stars were just spotted in! Then decide – fabulous or fashion fail!

KRISTIN CAVALLARI

Still not convinced the new mom is back in pre-baby form? Well, she's here to prove it once and for all in a silky white Olcay Gulsen top and raspberry high-waist shorts, which she selects for a Bing Halloween event in N.Y.C.