KIIS-FM’s Ryan Seacrest works the crowd as the concert kicks off in Irvine. (Charley Gallay / Getty Images)
Janelle Martinez of Prima J performs. (Charley Gallay / Getty Images)
Joe, left, and Nick Jonas of the popular Jonas Brothers were among the day’s headliners. (Lori Shepler / Los Angeles Times)
Reverent fans watch the Jonas Brothers. (Lori Shepler / Los Angeles Times)
Radio Disney favorites the Jonas Brothers perform kid-friendly rock. (Lori Shepler / Los Angeles Times)
Whitestarr’s Cisco Adler, left, joined Shwayze at Wango Tango. (Lori Shepler / Los Angeles Times)
Miley Cyrus plays to the crowd during her set at Wango Tango. (Lori Shepler / Los Angeles Times)
Miley Cyrus performed from her “Hannah Montana” songbook. (Lori Shepler / Los Angeles Times)
Rapper Flo Rida performed a later set. (Lori Shepler / Los Angeles Times)
Girl group Danity Kane performs. (Lori Shepler / Los Angeles Times)
Actress and tabloid favorite Lindsay Lohan gets the crowd primed for the night’s main event. (Lori Shepler / Los Angeles Times)
Snoop Dogg closed the show with a more adult-oriented beat. (Lori Shepler / Los Angeles Times)
