It's not every day that a world famous pop star performs at your school - but that's what happened to kids in Surrey when Pixie Lott popped in to say hello!
The children had recorded a version of her hit Boys and Girls to raise money for charity.
The video has become a massive hit online, so Pixie wanted to congratulate the kids in person.
She also performed an exclusive gig and of course Newsround got all the behind the scenes gossip. Check out Ricky's report here.