Mary-Kate Olsen (28) 'secretly marries' Olivier Sarkozy (45) in surprise ceremony

Olivier Sarkozy and Mary-Kate Olsen in 2013

Olivier Sarkozy and Mary-Kate Olsen in 2012

Olivier Sarkozy and Mary-Kate Olsen in 2012

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thumbnail: Olivier Sarkozy and Mary-Kate Olsen in 2013
thumbnail: Olivier Sarkozy and Mary-Kate Olsen in 2012
thumbnail: Olivier Sarkozy and Mary-Kate Olsen in 2012
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Caitlin McBride

Just imagine the dress.

Former child star turned billionaire fashion designer Mary-Kate Olsen (28) has reportedly wed her fiance, Olivier Sarkozy (45).

Olivier Sarkozy and Mary-Kate Olsen in 2013

Despite their 17-year age gap, the couple are said to have instantly hit off when they first began dating in 2012 and made it official when he proposed in March of this year.

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PHOTOS:

Olivier Sarkozy and Mary-Kate Olsen in 2012

The pair are often photographed out and about in New York together, but rarely pose together at events.

And now, sources close to the pair have confirmed they secretly wed, although no other details are being released at the moment.

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An Olsen insider told US magazine Lucky: "We've received confirmation of Olsen and Sarkozy's marriage from an anonymous, well-connected source. Congrats to the happy couple!"

Olivier is the half-brother of former French President Nicholas Sarkozy and has two children from a previous marriage.