The t-shirt, which is available exclusively from Sportsdirect.com, has been worn by Olly Murs, Stacey Solomon and Kara Tointon.

The T-shirts, which are all made from 100% fair trade cotton, sell for £8 for tan adult size and £6 for the junior, with £4 of the proceeds of the adult shirt and £2 of the junior shirt going directly to Sport Relief.

Dave Forsey, CEO of Sportsdirect.com, said: "We are delighted to be partnering with Sport Relief and look forward to contributing to another phenomenal campaign.

"Sport Relief has gone from strength to strength in recent years and we hope that our customers wholeheartedly support the campaign by ordering online or picking up a -shirt in-store.

"2012 is going to be a massive year for sport, and we are very excited to be partnering with Sport Relief at this time."

What are you doing for Sport Relief? Tell us in a comment below…