Mary-Kate, Ashley Olsen Are the Most Fashionable Wedding Guests Ever

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Wedding MVPs! Mary-Kate and Ashley Olsen wore cool, yet unexpected outfits to attend the nuptials of art collector Alberto Mugrabi and fashion blogger Colby Jordan in the South of France over the weekend of September 24.

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The Row designers, both 30, rocked head-turning outfits for the big day, which took place at their accommodation, the Hotel du Cap-Eden-Roc in Antibes, France.

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@hotelducapedenroc #amazing #wedding

A photo posted by Preciously Paris-by C. Tessier (@preciouslyparis) on Sep 25, 2016 at 12:30am PDT

Mary-Kate, who attended the celebration with husband Olivier Sarkozy, wore a glamorous black swing dress with an off-the-shoulder neckline that featured exaggerated shirt-collar details. She paired the contrasting ensemble with a diamond necklace, stud earrings and black ankle-strap heels.

Ashley had a little more fun with color, choosing a beaded long-sleeve gown with an abstract face accent. Metallic heels finished her glitzy ensemble. "Night one!" the Elizabeth and James designers' pal and CEO of e-commerce site Chapel, Alessandra Brawn, captioned of photo of the sisters, herself and one other friend, Marcella Guarino, ahead of the reception.

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When your clutch is perfectly on theme! ?

A photo posted by @alessandrabrawn on Sep 25, 2016 at 11:18am PDT

Over the weekend, the Olsens were also spotted in black swimsuits, as they relaxed poolside at the hotel, which famously hosts the annual Cannes Film Festival amfAR Gala

my wedding date ?

A photo posted by Karlie Kloss (@karliekloss) on Sep 25, 2016 at 8:50am PDT

Other guests at the star-packed gathering included Karlie Kloss, in a lacy nude number, who brought Princess Beatrice, in a gold dress, as her "wedding date." The Swarovski brand ambassador gushed about the newlyweds in an Instagram post, writing, "an unforgettable night celebrating a beautiful couple. Wishing you a lifetime of happiness Tico and Colby ❤️👰🏻💁🏻‍♂️."

Too many men, too little time ??? #tolby

A photo posted by Derek Blasberg (@derekblasberg) on Sep 24, 2016 at 10:44am PDT

Also decked out in formal attire? Owen Wilson, who looked dapper in his groomsman tux for the special occasion.

with Don V ❤️

A post shared by Heidi Klum (@heidiklum) on

But all eyes were on the bride, who runs the blog Minnie Muse. Jordan donned a Valentino Couture gown with Swiss-dot embroidery and a sheer, illusion neckline.

WISHING COLBY & TICO " LA VIE EN ROSE " #BESTWISHES #TICO&COLBY #LOVEISINTHEAIR #GARDENOFEDEN #BESTCOUPLE @maisonvalentino

A photo posted by Carlos Souza (@carlossouza1311) on Sep 25, 2016 at 2:41am PDT

Which guest's look is your favorite?

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