Los Angeles-Musical performances and celebrity guest appearances marked the unofficial start of summer in Los Angeles with KIIS FM's annual Wango Tango concert, held this year at the Staples Center. This year's concert featured musical guests: Usher, Ludacris, Taio Cruz, Akon, Justin Bieber, Lucero Perez, B.O.B, Bruno Mars, Rivers Cuomo, Adam Lambert, Iyaz, Ke$ha, David Guetta, Kelly Rowland, Auburn, Alexis Jordan, JLS, Wonder Girls, Justin Gaston, Charice
and other local bands on the village side stage. (Photos by Getty Images)
View Slideshow
