American singer Vanessa Carlton announced at a gig this weekend that she is bisexual.

She told an audience of 18,000 people at a gay and lesbian festival in Nashville, Tennessee that she was “proud” of her sexual orientation.

Carlton said: “I’ve never said this before, but I am a proud bisexual woman.”

The A Thousand Miles star, 29, was headlining the Nashville Pride Festival at the city’s Riverfront Park on Sunday.

She has previously dated John Mayer and Third Eye Blind frontman Stephan Jenkins.

Her announcement follows the one made by actress Anna Paquin recently.

Paquin appeared in a public service advert to declare she was bisexual.