Arnold Schwarzenegger's son films PSA for Gaga

Arnold Schwarzenegger's son Patrick has filmed a public service announcement for Lady Gaga's anti-bullying organization.

The teenage model admits he's a big fan of the pop superstar - and her Born This Way Foundation, which aims to stamp out bullying in schools.

He says, "She was bullied and obviously some people were cruel and mean to her when she was growing up. But I think the world and society accepted who she was. And now her level of fame and success shows other kids that they can really be who they are."