Lineker's latest guise aids Comic Relief

Gary Lineker dresses up as Britney Spears in a new advert for Comic Relief screened today.

The Match of the Day presenter wears a school uniform and pigtails like Britney in her Baby One More Time video.

The Walkers Crisps ad also features boy band McFly and X Factor judge Simon Cowell.

McFly play the world’s most obnoxious band and Cowell – in his first Mr Nice Guy role – is their long-suffering manager.

Lineker poses as a girl groupie to get near the band – and their stash of crisps.

The ad is for Walkers' new “mixed-up” crisps, on sale in the UK until Red Nose Day on March 11.

The limited-edition packs include Cheese and Pickle flavour and Bacon and Ketchup.

Walkers will donate 1p to Comic Relief from every packet sold.

As the face of Walkers, ex-England captain Lineker has previously dressed up as Austin Powers, David Beckham, a punk and a nun in a series of adverts.