Anna Paquin Anna Paquin

Anna Paquin says she's bisexual.

The Oscar winner, who's engaged to her True Blood co-star Stephen Moyer, made the declaration in a PSA video for the True Colors Fund, a nonprofit co-founded by Cyndi Lauper that promotes gay, lesbian, bisexual and transgender equality. The organization's "Give a Damn" campaign kicked off Thursday and features Paquin and other stars speaking out about equality.

Anna Paquin and Stephen Moyer get engaged

"I'm Anna Paquin. I'm bisexual and I give a damn," she says in the clip, which was first posted on RadarOnline.

Check out photos of Anna Paquin

Other celebrities participating in the campaign include Wanda Sykes, Elton John, Clay Aiken, Whoopi Goldberg, Sharon and Kelly Osbourne, Jason Mraz, Eric Roberts, Kim Kardashian and Cynthia Nixon.Paquin, 27, and Moyer, 40, got engaged in August 2009.

Watch the PSA: