Ahead of tonight's big Met Gala (the annual Costume Institute Gala Benefit), the Metropolitan Museum of Art officially renamed its Costume Institute, changing it to The Anna Wintour Costume Center. First Lady Michelle Obama was on hand for the rechristening.

The First Lady said, "For our young people...this center will be a source of learning & inspiration," and helped the Vogue editor cut the ribbon on the space (even though it was held at the Temple of Dendur).

This year's gala will celebrate the Charles James exhibit.