The world lost the plot after this photo of youthful Mary-Kate Olsen with her now husband Olivier Sarkozy (17 years her senior) went public.

THEY say age is just a number when it comes to falling in love and nobody proves this point more than the Olsen twins.

Mary-Kate set tongues wagging last year when she married Olivier Sarkozy, a man 17 years her senior but her twin Ashley is out to top this having just confirmed her relationship with 58-year old financier Richard Sachs. The twins are 30.

They’re not the only celebrity couples comfortable with a bit of an age difference though, here’s some of the world’s most famous couples who have the biggest age gaps.