Demi Lovato is fighting controversy again after alleged nude photos have leaked to the Internet.

A series of pictures have been made available featuring Lovato in bed, as well as photos of a nude woman that appears to be Lovato – at least, that tattoos are in the right places. There are also photos of on-and-off boyfriend Wilmer Valderrama in the set, featuring the two cuddling up but completely covered.

A few of the photos are from the "collection" leaked last year, which was being sold by an anonymous seller who claimed Demi was bisexual. Those photos were never confirmed to be her.

Lovato appeared to respond to the controversy with a recent post on Twitter: "Soy fuerte. Soy luchadora. Asi que no me subestimen." That translates to, "I am strong. I am a fighter. So do not underestimate me."