Stars including Tom Hiddleston, Debbie Harry, Gemma Arterton and Simon Pegg are putting the T into charity by signing up to help Comic Relief.

They posed for pictures in a range of special t-shirts designed by some of fashion’s biggest names including Anya Hindmarch, Karl Lagerfeld and Matthew Williamson. The t-shirts – and a onesie designed by Henry Holland – will go on sale at TK Maxx stores with a share of the proceeds going to Comic Relief.

Watch below the behind-the-scenes with all the celebrities, including Tom: