Last Night's Look: Love It or Leave It?We can't stop talking about Selena Gomez's plunging neckline, Jessica Biel's couture creation and more outfits that stars were just spotted in. Check them out, then vote – fashion-forward or fashion fail?

CHRISTINA AGUILERA

We'd like to say that what we notice about this outfit is the singer's pretty white top with silver sequins and her red lipstick, but the truth is we can't stop staring at the exposed gold zipper on her skinnies, worn to a red carpet event for The Voice in N.Y.C.