Sir Elton John was accompanied by a number of stars at the premiere

Pop stars Geri Halliwell and Sting were among those out to see gender-swap comedy It's A Boy Girl Thing.

The X Factor judge Sharon Osbourne, who has a role in the film, brought along daughter Kelly, saying husband Ozzy "has had enough of me right now".

Sir Elton also told reporters he had discussed a compere role at next year's Concert for Diana with the princes.

He said: "They said there might be a role for me doing the MC bit by linking it all together, which I don't mind doing.

"The princes will choose all the acts and if I can help co-ordinate it, I will."

Also attending were fashion duo Trinny and Susannah, presenter Graham Norton and singer Jamelia.

The Leicester Square premiere was held to support Sir Elton's Aids foundation.