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Carey Mulligan - 2012
At age 27, "The Great Gatsby" star already has a few Met moments under her belt, but in 2012 she stepped out as co-chair of the event -- and a fashion force to be reckoned with -- in this shiny Prada frock.

Memorable Looks From Met Galas Past

The annual Met Gala is like the Oscars of fashion. In anticipation of this year's stylish event on May 6, omg! takes a look back at some of the most interesting gowns the stars have worn over the years.