First Lady Michelle Obama will lead the U.S. delegation at the 2012 Summer Olympics in London, according the MSNBC.

The Summer Games will be held from July 27-August 12.

In celebration of today’s announcement, Mrs. Obama held a “mini-Olympics” event at American University for local Washington D.C. children.

In partnership with first lady of Britain, Samantha Cameron, Mrs. Obama invited. U.S. Olympians Dominique Dawes, Lisa Leslie and more to participate in the “Let’s Move” event that also doubled as the Summer Games unofficial kick-off.