A fresh Britney Spears hosting Wango Tango Concert

Stepping out for her guest co-host duties, Britney Spears was busy entertaining the audience at Staples Center in Los Angeles, California on Saturday night (May 14).

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The “Hold It Against Me” singer teamed up with Ryan Seacrest to kick of KIIS FM’s 2011 Wango Tango Concert – with the show’s lineup including Selena Gomez, Ke$ha and Jennifer Lopez.

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Tweeting about the busy day’s plans, Brit wrote to her millions of followers, “Rehearsals all morning. Wango Tango all night…. -Britney”

Meanwhile, Miss Spears also recently tweeted her choice of “I Wanna Go” as the next single to be released from her Femme Fatale album, as she posted the following message: “So excited 2 announce that the fan favorite #IWannaGo is my next single from Femme Fatale! Shhh, it’s my fav too!”

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What do you think about her host and her outfit? Do you like the show?