The moment a top fashion designer's wife's trousers fell down at Cannes

Hosting a star-studded A-list party aboard the couples' exclusive private cruiser in Cannes, Eva encountered an A-grade wardrobe malfunction of Titanic proportions.

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Going, going, gone: Eva's embarrassing fashion blunder

Eva revealled a little more than most expected during her A-list party in Cannes

Known in fashion circles for her red carpet composure and sophisticated style, Eva found herself in a less than glamorous state when her white silky skirt fell down around her ankles.

Eva eventually made her way onto the boat - rather red-faced no doubt - where she joined her guests, including Sharon Stone, Mischa Barton and Minnie Driver.

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Eva Cavalli (right with Naomi Campbell) usually cuts an elegant figure

Stone was clearly in good spirits and kept well refreshed during the afternoon, but later looked a little worse for wear after the day of wine-guzzling.

Meanwhile, Barton raised when she sneaked off for to smoke rolled cigarettes on the top deck.

Driver, who is nursing a broken heart now that her former fiancé magician Criss Angel is keeping company with Cameron Diaz, put on a brave face for the occasion, and looked on the bright side things in an eye-catching yellow dress.

Cheers: Sharon Stone kept her glass charged

Mischa Barton was barefoot and ready for fun, while Minnie Driver arrived looking chic in yellow