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Gwen Stefani and Gavin Rossdale attended the 2013 Costume Institute Gala in New York City on Monday night, and the 43-year-old singer showed some skin in a black and white Maison Martin Margiela gown. Gavin didn't wear makeup or a mohawk, but he did rock a plaid suit with a dropped crotch. Looks to us like Gwen styled him for the evening!

And speaking of couples, Jessica Alba and Cash Warren also hit the red carpet, and while we don't really care too much about Cash (sorry!), Jess looked incredible in a Tory Burch gown:

'PUNK: Chaos To Couture'  gala nyc fashion red carpet