Justin Bieber: Wango Tango Teen!

has the time of his life on stage as he performs at KIIS FM’s 2010 Wango Tango concert held at the Staples Center in Los Angeles on Saturday afternoon (May 15).

The 16-year-old entertainer performed his well-known hits “Baby,” “One Less Lonely Girl,” and “One Time.” Check out one of his performances below!

According to MTV, Justin started his seven-song set with “Love Me,” an ode to the ’90s greatness of the Cardigans‘ “Lovefool.” He also performed a cover of Aerosmith’s “Walk This Way.”

Justin pulled in the crowd, saying, “Put your rock stars in the air!” and the crowd raised their hands up in the famous devil horns gesture.

35+ pics inside of Justin Bieber at Wango Tango…

Who’s Justin Bieber’s BIGGEST Fan?

We all know everyone–from President Obama to little crying Cody–is a fan of Justin Bieber. I mean, who wouldn’t be? But there’s one special fan that’s got a major case of Bieber Fever and her name is Allua, the female beluga whale! When Justin visited Sea World today to perform, he got a big wet kiss from Allua right on the cheek! We know Justin loves the ocean and animals, so what better place to find his biggest fan than at Sea World! How cute is this photo, guys? We love it!