Last Night's Look: Love It or Leave It?Check out the head-turning outfits Ashley Greene, Gisele Bündchen and more stars were just spotted in! Then decide – fabulous or fashion fail!

AVRIL LAVIGNE

She's wearing every accessory known to man except for the one we really want to see – that 14-carat engagement ring! The bride-to-be goes trend-heavy and dons a graphic tee, a maxi skirt, neon heels and geek-chic glasses to her Abbey Dawn booth at Las Vegas's MAGIC trade show.