Supermodel Naomi Campbell and her Russian billionaire boyfriend Vladislav Doronin are rumoured to be on a "break" .
The supermodel has been with Doronin since around five years, but it is believed their relationship has hit the rocks and they have decided to be away temporarily, reports contactmusic.com.
In claims made to the New York Post newspaper, a source said: "Naomi and Vlad have broken up, and he's been out partying in New York."
Another source added: "Naomi and Vlad have a complex relationship, and sometimes break up and make up ... They spend a lot of time apart due to work commitments."