Last Night's Look: Love It or Leave It?We can't stop staring at Olivia Wilde's red-hot number, Jennifer Aniston's figure-flaunting dress and more outfits that stars were just spotted in. Check them out, then vote – fashion-forward or fashion fail?

CHRISTINA AGUILERA

Another pop star who loves her crazy-tight minis. The singer shows off her slimmed-down figure (and whiplash-inducing décolletage) in a Pepto-pink Alaïa mini at NBC's Summer TCA Tour event in Beverly Hills.