Little Mix have been unveiled as ambassadors for children's charity Rays of Sunshine.

The Shout Out To My Ex hitmakers join fellow Rays of Sunshine ambassadors Craig David, Joe Wicks and Pixie Lott, and the charity posted on Instagram 'We are SO excited to announce @littlemix have become Ambassadors! They've been so #generous in giving up their time to help us grant many #magical #wishes for seriously ill and very deserving #children across the UK. We can’t wait to work together in the future to continue bringing #smiles to so many #brave and #inspiring families'.