In photos: WE Day California 2016

Demi Lovato, Jacob Tremblay and Selena Gomez are just a few celebrities who descended on L.A's The Forum to celebrate WE Day California 2016.
The international event, started by Canadian brothers Marc and Craig Kielburger, shines a light on young people who are making positive changes within their community and across the globe.
Click through to see all the stars that turned out to celebrate and promote change.