When the scandal, which has involved US actress Jennifer Lawrence, first broke, Kelly seemed confident that she wouldn't become a victim.
JENNIFER LAWRENCE DESCRIBES LEAKED NUDE PHOTOS AS A 'FLAGRANT VIOLATION'
Speaking then, Kelly said: "The only nude photos you'll ever see of me are the ones that I 'leak' and the ones that my head are superimposed on!"
At the time, some suggested that Kelly was having a sly dig at those who had their nude photos leaked.
But now she has blasted the hackers, tweeting: "My lawyer is currently dealing with 18 women who have all their ICloud hacked. It is a Sex Crime and a complete invasion of Privacy [sic].
"We will find this person and they will be prosecuted. Not having it. Some very young innocent women have been targeted it's so wrong [sic]."
Rihanna, Michelle Keegan and Kirstan Dunst have all become victims of the hacker, and Kelly is said to be 'horrified' that she's joined them.
READ: OUTCRY AFTER WEBSITE PUBLISHES '24 SIGNS SHE'S A SLUT'
A source told The Sun: "She is naturally very upset. She may have profited from images of her body in the past, but these were her private images pumped out to the world. She's horrified."
Meanwhile Kelly's very public split from fiancé David McIntosh continues. While she focuses on her career, filming US sitcom One Big Happy in LA, he's been spotted with a mystery brunette.