Jennifer Lawrence [1] dropped by the The Tonight Show to promote the final film of The Hunger Games franchise, Mockingjay — Part 2, on Wednesday. During her appearance, we caught yet another glimpse of Jennifer's epic dance moves [2] when she and Jimmy Fallon [3] decided to bust a move in a series of hilarious dance skits. See who won the dance-off in the clip above, and then check out Jennifer's stunning Hollywood evolution [4].