Last Night's Look: Hit or Miss?

Check out the head-turning outfits Kate Winslet, Emma Stone and more stars were just spotted in! Then decide – fabulous or fashion fail?

JENNIFER LOPEZ

Also kicking off Carnaval in Brazil, the diva teams a fiery all-red ensemble (J. Brand skinnies and a sparkly top) with nearly $300,000 of diamond jewelry by Norman Silverman and H.Stern.