[caption id="attachment_104290" align="aligncenter" width="607"] "F" is for friend.[/caption]

Adam Lambert, LeAnn Rimes, Rumer Willis, Darren Criss, Tim Gunn, Real Housewives‘ Lisa Vanderpump and model Ronnie Kroell are among the celebs starring in a new anti-bullying campaign in support of the Friend Movement Anti-Bully Benefit Concert.

The concert, which will take place July 1 in LA, will feature performances from Rimes, Frenchie Davis, Dia Frampton from The Voice and more, and benefit the Friend Movement.

Created to help show positive anti-bully images through art and media, Friend Movement inspires people to prevent bullying by enabling them to be a better friend; providing entertaining and educational resources, cultivating global partnerships, and leveraging the latest social media technology.

You can learn more about this organization, and their upcoming concert, here.