'High School Musical' grad Vanessa Hudgens is suing a Web site that refuses to remove naked photos of the star, TMZ reports.

The 21-year-old has been trying to make the "self portrait photographs" disappear since the scandal first broke in August and even registered the images with the U.S. Copyright Office. But several sites, namely MoeJackson.com, continue to run the pics despite what her lawyers cry is a copyright violation.

The lawsuit explains: "The photos were obtained by unknown methods and posted on the internet by an unknown person without Hudgens' knowledge or consent."