Yeah but no but...meet my friend Kate

Decked out in cheap gold chains and a garish blue tracksuit top, Kate Moss was barley recognisable during her theatrical debut last night.

Away from the glamour of the catwalk, the supermodel embraced her role as the sister of Britain's favourite chav Vicky Pollard with apparent ease.

Moss joined Little Britain stars David Walliams and Matt Lucas for a cameo appearance at the Hammersmith Apollo in London for a Comic Relief version of the famous television comedy series.

Details of her role were kept under wraps before she appeared shellsuited pal of "yeah but no but" teenager Vicky Pollard.

Walliams persuaded Moss to take part after she and boyfriend Pete Doherty went to see a Little Britain show.

Standing next to Lucas, she mimicked his expressions of a delinquent teenager.

Moss then joined the Little Britain star next to a line of six buggies, posing as a teenage mum on benefits.

"I've known Kate socially for a little while and she and Pete came to our show one night and liked it," he said.

"So we thought, let's be cheeky and see if we can convince her, and she was up for it.

"It'll be a speaking role but I don't want to give too much away. When you see her and what she'll be wearing and doing, it'll be a big surprise."

Walliams believes the supermodel has a flair for comedy.

"The thing about Kate is that she's funny in her own right so we think it'll be brilliant," he said.

Russell Brand and Jonathan Ross will also appear in the comedy show. All proceeds will go to Comic Relief.

Walliams raised £1 million for the cause earlier this year by swimming the English Channel.

More pics at the Daily Mail