Photos: KIIS FM's 2011 Wango Tango Concert

Singer Ke$ha Performs During the Wango Tango Concert

Jennifer Lopez, T-Pain, Neyo, Britney Spears and others graced the stage at the KIIS FM 2011 Wango Tango Concert. Check out the pix after the jump:

JLo & Pitbull

Britney Spears Speaks on Stage

Neyo & Pitbull