Jenna Dewan stopped by The Tonight Show Starring Jimmy Fallon on Tuesday night to promote the hit NBC dance competition World of Dance. Jenna, a trained dancer who gained fame after starring in Step Up with ex-husband Channing Tatum and working with Justin Timberlake and Janet Jackson, is a judge on the show along with Jennifer Lopez and Derek Hough. During her interview with Jimmy, Jenna talked about her time as a backup dancer for Janet, during which she learned the iconic choreography for "Rhythm Nation." The actress then attempted to teach Jimmy the moves, all while in high heels! Watch the video above, starting at 4:45, to see her impressive lesson.