Last Night's Look: Love It or Leave It?We can't stop talking about Reese Witherspoon's LBD, Jennifer Lopez's voluminous skirt and more outfits that stars were just spotted in. Check them out, then vote – fashion-forward or fashion fail?

GWEN STEFANI

Who else can rock a black silk jumpsuit, baby blue platform sandals and aqua Quay Eyeware sunnies so effortlessly? Gwen tops the striking look with her signature red pout at the premiere of Monsters University in Hollywood, Calif.