Anna Paquin played Rogue in the X-Men movies
The True Blood star made the admission in a new online public service announcement for the True Colors Fund's Give A Damn campaign.
‘I'm bisexual, and I give a damn,' she says in the clip.
It is the first time Anna, 27, has talked about her sexuality.
She got engaged to True Blood co-star Stephen Moyer, 40, in August 2009.
The Give A Damn campaign has been organised by Cyndi Lauper and aims at promoting gay, lesbian, bisexual and transgender equality.
SEE VIDEO Anna Paquin reveals she's bisexual here>>
