Word reaches ELLE HQ that Mary Kate Olsen has secretly married her banker beau Olivier Sarkozy.

The couple got engaged six months ago when Sarkozy presented her with this unbelievable vintage Cartier ring, reportedly worth £48,000.

At the weekend, they were spotted eating lunch together in the Hamptons - and the eagle-eyed snapper spotted that she'd swapped it for a plain gold band, and that Sarkozy was wearing one too.

An unnamed but 'well-connected' source has since confirmed to US magazine Lucky that the assumption is true, and the couple - who have a 17-year age gap - tied the knot in secret.

But will we ever find out whether MK designed her own dress?

Here's hoping.