Justin Bieber attended the Variety's 2010 Power of Youth event in Hollywood held at Paramount Studios in today. Bieber is one of the five nominees set to be honored at the event for his commitment and support to the Pencils For Promise charity.

Bieber posted on his Twitter account that he will be giving away 500 tickets to his Staple Center show tomorrow. Each charity honored at the event will receive 100 tickets.

"Best part was I got to surprise the charities being honored. My show tomorrow at the Staples Center in LA is sold out but we saved 500 tickets to give 100 each to each charity being honored to give to kids in need," wrote Justin Bieber on his Twitter page.

"Let them have a fun night they deserve I know what its like to have some tough times so I hope those tickets make u kids coming smile a little. Gonna be a fun show. Thanks."