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

OLIVIA WILDE

Add this to our list of potential holiday party outfits. For the Hollywood premiere of her film Deadfall, the actress sparkles in a demure L'Wren Scott skirt-and-sweater ensemble, plus jewels by Ariel Gordon, Iwona Ludyga Design, House of Lavande Vintage and Pearl Paradise.