For one night only the tables were turned on the X-Factor's judges as they risked ridicule themselves by wearing tutus to join the cast of Billy Elliot at a charity gala performance.

Simon Cowell, Sharon Osbourne and Louis Walsh joined Sir Elton John, the show's composer, and Liam Mower, one of the most popular young actors to play Billy, to mark the sale of the millionth ticket.
Cowell, Osbourne and Walsh played examiners at the Royal Ballet School during a short scene last night at Victoria Palace Theatre.
Sir Elton said
"It was one of the funniest things I've ever seen when they made their appearance. But they were brilliant. Should they ever want to go back on stage again, they've got it made. Being in a tutu is a whole new career for Simon Cowell." 
Cowell was his usual self on the subject of his stage debut
"There's already a rumour going around that we're up for a Tony Award. It was easy, but then we only had a couple of lines and we were not dancing with boxing gloves." 
After the trio put on their tutus for an encore, Cowell joked "Louis Walsh brought his own."
The night raised £25,000 for The Place 2Be, which provides emotional and therapeutic support for vulnerable children. It is donating the money to schools in Easington, in the North-East, where the musical is set.