Ashley Jensen has been preparing to sing in an upcoming musical episode of Ugly Betty.

The Scottish actress, who plays Betty's best friend Christina in the programme, has admitted that she will not be as good as Vanessa Williams (Wilhelmina), who is an experienced singer after signing a record deal in the late 1980s.

But Jensen admitted she hopes viewers will like her attempt anyway, saying: "Most people have got a wee (small) voice inside them. It might not be Vanessa Williams' standard. But I think what will be part of the charm is that it will be the characters singing."

Marc Shaiman, who wrote the score for the Broadway version of Hairspray, will compose the music for the episode.