What They Wore: KIIS FM’s Wango Tango Concert 2011

Los Angeles radio station KIIS FM hosted its annual Wango Tango concert at Staples Center last night with performances from Ke$ha, Jennifer Lopez, T-Pain, Matthew Morrison, and more. Here’s what the celebrity guests, including Britney Spears, Paris Hilton, and Lucy Hale, wore to the event.

Which look is your favorite? What would you wear to a big summer concert?