Emma Stone and Jimmy Fallon lip-synch battle on 'The Tonight Show'

Emma Stone and Jimmy Fallon recently faced off in an epic lip-synch battle. The 25-year-old actress appeared on The Tonight Show Monday to promote her new movie, The Amazing Spider Man 2. Host Fallon challenged Stone to a lip-synch battle during the episode, and the actress emerged victorious from a four-round competition. Fallon started off with a sassy performance of "Fancy" by Iggy Azalea. Stone countered with "Hook" by Blues Traveler, only to be met with Fallon's lip-synch delivery of "Mr. Roboto" by Styx. The actress finished off with an energetic rendition of "All I Do is Win" by DJ Khaled to win the competition. The Amazing Spider Man 2 debuts in theaters on May 2.