Britney Spears' sons are to star in the video for her new single Ooh La La, which features on the soundtrack for the Smurfs 2 movie.
Britney has revealed her sons from her marriage to Kevin Federline, seven-year-old Sean Preston and six-year-old Jayden James, are massive Smurfs fans, and were really excited to be a part of her video.
The 31-year-old singer told Ryan Seacrest on his radio show: "I have always loved the Smurfs as a kid and now my boys are the biggest Smurfs fans EVER.
"They were actually really, really good on set. They were, like, acting, and my oldest son, Preston, was right on cue every time they would tell him to do something.
"Later on I got to see what they actually did on camera and it was adorable. I know they'll think it's Smurftastic!"
Britney unveiled the track on Twitter and said it was "for my two precious boys". She revealed they are "obsessed" with the Smurfs and have seen the movie "a million trillion times".
The star has previously revealed she thinks her sons will follow her into showbusiness.
She said in an interview in 2011: "When I'm on the road they come with me and they love being on the road. They are in awe, they come home and copy the dancers' moves and try to get on their heads and do spins and do all these things. They'll probably be in the entertainment business, definitely."
And last year she admitted she had mixed feelings about them being in the spotlight.
She said: "If there was something they really wanted to do and were passionate about, I'd encourage them to follow their dreams. But I'd also be there behind the curtain saying, 'No, don't go out there'."