Sean, 7, and Jayden, 6, appear alongside the 31-year-old singer as the trio is watching the "Smurfs 2" movie in the theater. Seconds later, Spears gets sucked into the silver screen and sings the film's feature song alongside the Smurfs.
Related UPI Stories
Britney Spears's sons made their onscreen debut in their mother's video for "Ooh La La (From the Smurfs 2)."
© 2013 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.