Here you can see some pictures of Olivia Wilde attending CFDA/Vogue Fashion Awards 2011. She was wearing a sexy black dress by Cushnie et Ochts, which wasn't actually a good choice for Olivia as her legs look thick and short.
Anyway, I think she has one of the most amazing faces I've ever seen. Also, the makeup and hairstyle, ombre hair with bangs, are great. I wouldn't mind looking like her even though I got better legs;) !