LeAnn Rimes and Eddie Cibrian attended the NOH8 4th Anniversary Party at the Avalon in Hollywood last night, and the duo snuggled up on the red carpet before she took the stage to perform a few songs.

LeAnn and Eddie have both posed for the NOH8 campaign in the past, which raises awareness and funds for gay rights causes, including ending California's 2008 voter-approved gay marriage ban, Proposition 8.

“It just breaks my heart seeing kids committing suicide because they're not accepted. It kills me,” Rimes told gay weekly Pride Source when she posed for her second NOH8 shoot this summer. Glad to see her stepping out for a good cause ... and rocking a sexy little black outfit while doing it!