Emma Watson is taking legal action after dozens of private images of her appeared online، according to "BBC".
A spokesman for the Beauty and the Beast star confirmed the pictures - which show her trying on various outfits - were stolen.
"Photos from a clothes fitting Emma had with a stylist a couple of years ago have been stolen،" her publicist said.
"They are not nude photographs. Lawyers have been instructed and we are not commenting further."
News of the theft comes a week after Watson sparked fierce debate over whether she was anti-feminist for exposing part of her breasts in a Vanity Fair photoshoot. The actress was previously threatened in 2014 with a leak of nude images، after a speech she gave on gender equality as a UN Ambassador for Women.
Speaking at a Facebook event in 2015، she said: "I knew it was a hoax، I knew the pictures didn't exist.
"The minute I stepped up and talked about women's rights I was immediately threatened - within less than 12 hours I was receiving threats."
Last month، a man in the US was jailed for nine months for hacking into the online accounts of celebrities، including Jennifer Lawrence، and stealing private information، including nude videos and photos.