The hacking of Christina's phone follows pictures of Olivia Munn hitting the internet which were allegedly stolen from her phone.
The images were published yesterday and the shots apparently show the Magic Mike star in different states of undress, including wearing pink lingerie, a black bra, a white bra and a low-cut v-neck.
There is also a nude shot which has been branded fake by the actress and her representatives.
Olivia, 31, took her Twitter page to assure fans the naked shot was not her.
Accompanied by pictures of a baby and a cat, she posted a tweet which read: "If you ever hacked my phone, these are the pictures you'd find."
- Bang! Showbiz