Episode 888 -- airdate -- Pictured: Katty Perry -- Photo By: Stacie McChesney/NBCU Photo BankLast Call with Carson Daly
Ryan Seacrest introduces Katty Perry at KIIS FM's Jingle Ball 2010 at Nokia Theatre L.A. Live on December 5, 2010 in Los Angeles, California.KIIS FM's Jingle Ball 2010 - Show