Demi Lovato is at the centre of a naked picture scandal after images purportedly showing the former Disney star in the buff leaked.
Fans of the singer were shocked when the images appeared online.
Some photos seem to show Lovato posing completely naked, while others feature her in bed with actor boyfriend Wilmer Valderrama, including one where she is biting his lip.
She hasn't explained how the pictures turned up online, but took to Twitter on Saturday to post a defiant message.
Lovato writes, "Soy fuerte. Soy luchadora. Asi que no me subestimen", which translates as, "I am strong. I am a fighter. So do not underestimate me."