Last Night's Look: Love It or Leave It?We can't stop talking about Jennifer Lopez's floral dress, Cate Blanchett's Valentino cape and more outfits that stars were just spotted in. Check them out, then vote – fashion-forward or fashion fail?

ALLISON WILLIAMS

Combining two of biggest current red carpet trends – black lace and sheer sleeves – the Girls actress dons a stunning black Oscar de la Renta gown with a major tulle skirt at the Winter Ball for Autism in N.Y.C.