This is exactly how I'd expect to see Summer Roberts arrive at the Met Gala. Yes, I know this is actually Rachel Bilson, but I do feel like she's channeling her OC character here. I think it's mostly the hair, which has a distinctly casual/California vibe. But, it totally is amped up by the bold makeup and fabulous gown. This one wins in my book, how about you?

Vote on all of my Costume Institute Gala polls here!