Supermodel Naomi Campbell may be planning to tie the knot with her Russian boyfriend Vladimir Doronin. Mirror.co.uk reports that Campbell has left Britain to set up home with her billionaire beau in Moscow.

"When Vlad asked her to move into his penthouse, she didn’t think twice. She has started Russian lessons and is making a real effort to bond with his friends,” said a source. Doronin also bought her a Van Cleef black diamond skull ring.

"It might not be an engagement ring but a wedding is on the cards – it seems the next logical step,” added the source.

Campbell, 39, met Doronin, 47, at the Cannes Film Festival 18 months ago.