NEW YORK, NY - MARCH 25: Actress Emma Watson enters the "Late Show With David Letterman" taping at the Ed Sullivan Theater on March 25, 2014 in New York City. (Photo by Ray Tamarra/WireImage)
NEW YORK, NY - MARCH 25: Actress Emma Watson enters the "Late Show With David Letterman" taping at the Ed Sullivan Theater on March 25, 2014 in New York City. (Photo by Ray Tamarra/WireImage)