A number of famous faces have joined up for Sport Relief's Twit Relief campaign.

Twit Relief will raise funds for the charity by running a number of online auctions.

The Sun reports that One Direction have offered the highest bidding fan the chance to be followed, tweeted and retweeted by the band on Twitter.

The Press Association reports meanwhile that Coldplay will be auctioning off a signed copy of their album 'Mylo Xyloto'.

Other musicians said to be taking part include JLS, Tinie Tempah and Olly Murs.