Britney Spears just released a brand new single ‘Ooh La La’ as part of the Smurfs 2 movie.
We’ve been playing it loads on Fun Kids without realising something huge – there’s another one of our favourite stars singing on the track!
Katy Perry has been hiding in the song all along. We’re a little bit embarrassed that we didn’t hear her – oops.
It all makes sense though because Katy voices Smurfette in the film!
Check out the video below and keep an ear out for Katy Perry singing background vocals.
Did you hear her? Let us know in the comment box below.
Also, if you love Katy Perry, we’ve got some great news. She’s releasing her new album very soon. It’s called ‘Prism’ and it’ll be out on 22nd October.
Katy’s not using normal TV ads to tell everyone though, she’s been driving a big gold lorry around the US with the details on the side.
Here’s an ‘artist impression’ of what it’ll look like in Britain…
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