Black Eyed Peas star Fergie has admitted to experimenting with women in the past.
But the singer, who is celebrating topping the UK charts, said she had so far been unable to maintain a steady relationship with a woman.
Fergie is the latest in a growing list of female celebrities who have admitted to being a bisexual.
She told The Sun: “Put it this way, I’ve experimented definitely, but I have never had a steady girlfriend.”
The My Humps star added that fans should watch out for the video to the group's next single I Got A Feeling, which features a girl-on-girl teaser.
“I met the girls right before we did the scene,” she said. “They were beautiful. They were hot.
“One of them was the director’s girlfriend — so he was happy!”
Last week, actress Megan Fox revealed she had no doubt in her mind that she was a bisexual.
Angeina Jolie and Lindsay Lohan are also among the Hollywood stars who have admitted to enjoying relationships with both sexes.