Katy Perry made a surprise appearance at "Oprah's Ultimate After-Oscar Party" at the Kodak Theatre – and we have the fun footage!
Fresh from their Oscar performance last night, Staten Island's PS 22 Chorus took the stage again for Oprah's special show, only to part like the Red Sea to let Perry join them for a rousing rendition of her new hit "Firework" -- to the surprise and excitement of the crowd.
Once the performance was complete, the kids surrounded Perry, who gave them high-fives. Perry, who is on tour, said she flew in at the special request of Oprah, and that she was inspired by the chorus after seeing them on YouTube.
Oprah also had an additional surprise for the kids, telling them that they'll all return to school with their own brand new Samsung Galaxy Tab tablet computers, courtesy of Sprint.
Oprah's show was chock full of stars, including 'The King's Speech' Best Actor Oscar winner Colin Firth, Best Supporting Actress winner Melissa Leo, Oscar show co-host Anne Hathaway, former statuette winners Sandra Bullock, Mo'Nique, Jeff Bridges and more