Appearing in a public service announcement, True Blood star Anna Paquin says she's bisexual.

“I'm Anna Paquin. I'm bisexual,” Paquin says in the just-released PSA. “And I give a damn.”

The star of HBO's vampire hit drama is currently engaged to co-star Stephen Moyer.

Paquin, 27, reportedly filmed the PSA on January 30 at the Standard Hotel in Los Angeles, reported.

The PSA, which also features Cyndi Lauper and openly gay celebrities Elton John and Whoopi Goldberg, benefits Lauper's True Colors Fund.

Rocker Lauper is playing Donald Trump's Apprentice for her LGBT charity, which has raised over $200,000 over the past 2 years for gay rights groups such as the Human Rights Campaign, CenterLink and PFLAG, the support group for parents and friends of gay men and lesbians.

The Give a Damn-themed PSA urges everyone to get involved in gay rights.

Paquin and Moyer, 40, became engaged last August.