Last Night's Look: Love It or Leave It?We can't stop talking about Jennifer Lopez's sequin gown, Sandra Bullock's sexy black dress and more outfits that stars were just spotted in. Check them out, then vote – fashion-forward or fashion fail?

KATIE HOLMES

It's a fine line between boho-chic and ready for a toga party, which is why we need you to make the call on Katie's one-shoulder Chloé dress, which she wears with Azzedine AlaÏa gladiators at Coach's Summer Party on the High Line in N.Y.C.