rihanna hair 2011

She's been sporting so many different wigs of late her fans will be forgetting what her real hair looks like.

And Rihanna swapped her look yet again last night, going back to long red curly locks after a week or so of wearing her hair in a pixie crop which some onlookers likened to a Beatles-esque moptop.

The 23-year-old star showed her latest look as she performed her new single California King Bed live on American Idol.