It's sure to cause some concern and dismay among his huge fan base as to why Zac Efron was sporting an injured hand tonight.
But if the young actor is to be believed, it was because one of his female admirers got a little too close for comfort.
He arrived at the European premiere of his new film The Lucky One at the Bluebird in Chelsea tonight sporting a flesh-coloured bandage on his left hand.
And when asked by waiting reporters what he had done to cause the injury, he smiled and said: 'A fan bit me'.
He was only joking, but considering the over-excited frenzy his fans can get into when he's in their vicinity, it wouldn't be surprising.