Harry Styles is among the stars who have taken silly selfies for a new charity campaign.

The One Direction singer posed with a banana smile and a dog for an 'Insta-Exhibition' to celebrate the 25th anniversary of the London-based gay equality charity Stonewall, in conjunction with SNOG frozen yoghurt.

He is joined by celebrities such as Naomi Campbell, Rita Ora, Russell Brand, Alan Carr and Jack Whitehall, who also got behind the campaign and showed their support for the cause.

SNOG founders Rob Baines and Pablo Uribe said: "This year has been an exciting year for SNOG. We launched our first range that you can enjoy at home and we wanted to mark this by supporting a cause personal to our hearts - people's freedom to SNOG who they want. We admire and respect the work of Stonewall and are proud to be part of the 25th year celebration."

More information about the campaign can be found at www.ifancyasnog.com.