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?

JESSICA BIEL

Perfectly matching your shoes to your dress: not just for bridesmaids anymore. Mrs. Timberlake teams her strapless tiered Dior Haute Couture creation with pumps that coordinate with the lilac layer and the yellow embellishments at the neckline of her dress for the Guggenheim International Gala in N.Y.C.