What Music Video Is This Picture From?

These hands are dancing figures from this 2008 music video from a very famous singer. The song wasn't her first single, but it was one of her biggest hits. It was even featured in a movie! Do you know what video this picture is from?

The clip is focused on a very fancy ball -- complete with fancy tuxes and big ball gowns. The woman finds her prince of the party and dances the night away with him. They also have a rendezvous outside the ballroom, in the field. Do you have any guesses? Click the link below to find out, and to try your hand at some more trivia!