Jan 21, 2012 at 5:00 pm

Selena Gomez: Charity Concert for UNICEF!

Selena Gomez shows off some bright purple and blue streaks in her hair at her charity concert to benefit UNICEF held at the House of Blues on Friday (January 20) in West Hollywood, Calif.

The 19-year-old entertainer, who wore a Miriam Haskell necklace, rocked the house with some of her hit songs, including “Who Says”.

“Y’all ready for the UNICEF show tonight? See you in 5 hours,” Selena tweeted before the show. “Lots of love for the UNICEF show :),” she updated later, with a picture of some gal pals backstage including Ashley Tisdale!

Soccer star David Beckham took his boys to see the concert, where they hung out with Selena‘s beau Justin Bieber, a concertgoer told JustJared.com. Justin and David were seen joking around together – and the Beckham boys got a high five from the Biebs before leaving!

Also spotted at David‘s table were Pretty Little Liars‘ Ashley Benson and Sean Kingston.

Check out a clip of Selena singing “Who Says”…