The X Factor and Celebrity Juice stars joined a host of famous faces to model this year's Dinosaur Red Nose and Comic Relief T-shirts designed by Stella McCartney.
Also among the celebrity 'Fun Raisers' are Miranda Hart, Miss Piggy, Stephen Fry, David Walliams, Mary Berry, X Factor's Union J, Kara Tointon and Rowan Atkinson, as well as the night's presenters Claudia Winkleman, Jack Whitehall and Lenny Henry.
Michael McIntyre, Rob Brydon, John Bishop, Davina McCall, Nick Grimshaw and Jonathan Ross will join the trio in hosting segments of the Comic Relief 25th anniversary broadcast on March 15 on BBC One.
Plonking on a nose as well is Helen Skelton, who will be taking on seven huge challenges for Red Nose Day in seven different locations around the UK. All the action from Helen's Magnificent 7 will be shown in a special seven-week series on Blue Peter, which starts tonight (January 31) and runs until Red Nose Day.
One Direction are releasing this year's official Red Nose Day single, a cover of Blondie's 'One Way Or Another', and Melanie C, Jack Dee, Chelsee Healey, Phillips Idowu, Greg James and Dara Ó Briain are currently taking part in this year's BT Red Nose Day Challenge - a trip down the Zambezi River to Victoria Falls.
Meanwhile, Jessie J has announced that she will be shaving her head on live TV as part of the fundraising extravaganza.
The Comic Relief Dinosaur Red Noses, which come in three varieties and are the first to have feet, are available from Sainsbury's, Sainsburys.co.uk, Oxfam or rednoseday.com.
[Comic Relief's celebrity 'Fun Raisers']
Copyright: Jon CottamThe Stella McCartney Comic Relief T-shirts are available to buy from TK Maxx nationwide, tkmaxx.com and rednoseday.com.
Watch an exclusive Digital Spy outtakes video of the Comic Relief 'Fun Raisers' shoot: