Since we posted the last batch of behind-the-scenes White House photos, we've been wondering about Michelle Obama's sparkly frock worn on December 10, while she and the president pretended to sing with an a cappella group. And Mrs. O has finally figured out who designed it -- Marc Jacobs! Okay, so we're pretty excited about this.
The dress hit the runway as part of the designer's Fall 2010 collection, and we believe this is the first time one of his frocks has made it onto the First Lady.
Take a look at Michelle in Marc (from the White House Flickr) and the runway look, and tell us what you think.