Nicole Scherzinger and Justin Bieber will perform on 'Let's Dance for Comic Relief'.
The 'X Factor' judge and the 'Baby' hitmaker will take to the stage to sing their new singles, 'Boomerang' and 'All Around the World' respectively, on the March 2 heats of the celebrity contest.
Meanwhile, the performer line-ups for the next two heats have also been confirmed.
Among the performers this Saturday (23.02.13), are Jon Culshaw, who will tackle Fatboy Slim's 'Praise You', Rosemary Shrager and Kim Woodburn dancing to 'Diamonds Are a Girl's Best Friend' and the cast of 'Waterloo Road' performing a Spice Girls routine.
They will be judged by a panel including comic Jason Manford and actress and former 'Strictly Come Dancing' contestant Lisa Riley.
The final heat on March 2 will see Lee Nelson dance to 'Swan Lake', Ore Oduba and Sonali Shah perform to Outkast, and Keith Duffy and Vanessa Feltz also taking to the stage.
Their efforts will be judged by Arlene Phillips, Keith Lemon and Lee Mack.
This weekend's show will also feature a video from One Direction about their recent visit to Africa to see Comic Relief projects in action.
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