updated 02/13/2011 AT 7:00 PM ET
•originally published 02/13/2011 AT 9:05 PM ET
The Teenage Dream singer, 26, was joined by husband Russell Brand, who had just hosted Saturday Night Live the night before, and her grandmother, Ann Hudson, at Sunday’s ceremony from L.A.’s Staples Center.
“If I don’t go home with any Grammys, I still go home with my Grammy,” she told E! host Ryan Seacrest.