Britney Spears involved in That's What Mama Say

The singer just with other celebrities will be special guests to participate in a charity that raises funds for poor children

Britney Spears, U2, Maroon 5, Rihanna, and others are in the project That's What Mama Say (event raises funds for children).

The program will premiere this December 28 and end on January 3, 2011.
Thaw's Mama's (short), will hold its first transmissions over the E! and will feature live performances by Mariah Carey, Maroon 5 and Chris Brown.
Rihanna has not yet been confirmed to perform live at the event, but will be in the soundtrack that will be sold to raise money for children in Canada, North American and South / East.
And on the Princess of Pop, the only thing revealed is that she recorded a video (not sure of that), it was confirmed their presence in vivo