The First Lady Performs In "The Evolution of Mom Dancing"

First Lady Michelle Obama and Jimmy Fallon perform "The Evolution of Mom Dancing" skit for an episode of “Late Night with Jimmy Fallon,” at the 30 Rock Studios in New York, N.Y., Feb. 22, 2013. Mrs. Obama previously appeared on the show in 2011, when she faced off with Fallon for a fitness challenge taped at the White House to celebrate the second anniversary of "Let’s Move!" (Official White House Photo by Chuck Kennedy)