Justin Bieber a surprise guest at Selena's UNICEF concert

**Erika <3** Sun Jan 29, 2012 9:03 pm

UNICEF ambassador Selena Gomez is set to throw a benefit concert at the House of Blues in West Hollywood on January 20, 2012 and she’s making sure to give her fans and UNICEF supporters some major bang for their buck.
According to reports, Justin Bieber will be a surprise guest at the show, and will even take the stage to perform!
Selena took posted the following about the show to Facebook:
“Have some surprise guests lined up for the UNICEF charity show… can’t wait to share them with you. Thank you all for supporting UNICEF, the House of Blues Concert on Jan. 20th sold out immediately!! Look forward to seeing you.”
It wont be the first time Justin Bieber has made a surprise appearance at one of Selena’s shows. Last year, Justin shocked Selena and her screaming fans when he stepped onto the stage during one of her summer concerts at Orange County Fair on July 24, 2011.