Last Night's Look: Hit or Miss?

Check out the head-turning outfits Eva Longoria, Jennifer Lopez and more stars were just spotted in! Then decide – fabulous or fashion faux pas?

DEMI LOVATO

The singer channels a little Greased Lightning in her shrunken moto jacket, super-fitted black jeans and crisscross platforms (plus gems by Evil Pawn Jewelry) to sign copies of her album at a London HMV store.