If you need a healthy dose of genuine laughter today, we recommend watching Demi Lovato [1] on The Ellen DeGeneres Show [2]. The "Sorry Not Sorry" [3] singer stopped by the show this week to help the host with a game of "What's in the Box?" Demi, who dressed up as Cinderella for the occasion, did her best Vanna White impression as a guest model but ended up hilariously failing (and almost tripping!) numerous times. See it all go down in the video above.