Whilst browsing CoutureLab.com I was surprised to stumbled across the Alexis Mabille Fall 2008 Couture dress, which Keira Knightley wore to “The Duchess” London premiere back in September last year and Dita von Teese wore to a “Dsquared² cocktail reception” during “Cannes Film Festival”.

It not often you find a runway couture dress on sale online, but you can purchase this dress in black from Couturelab for only £3,063/€3,277/$4,288.

Credit: Wireimage

Keira Knightley struck familiar pose pout on the red carpet at the premiere of her movie, The Duchess, in London last September.

She showed off her slender frame, whilst wearing a blue Alexis Mabille Fall 2008 Couture dress, who’s dotted detail on the blue tulle, was slightly darker from the runway version.

Side sweeping bangs, a chunky ring, and patent Moschino heels completed the look.

Dita von Teese wore the same couture dress to the Dsquared² cocktail reception celebrating their store opening in Cannes this week.

Despite how beautiful the dress looks against her porcelain skin, and how the style is perfect on her sexy silhouette, the whimsical feel of the dress suits Keira better.

She was wearing a stunning blue knee-length Alexis Mabille Fall 2008 Couture dress with lacy frilled neckline and hem. She wore Chanel jewelery, black Moschino pumps, and her hair was swept up in a simple chignon to complete her Hollywood star look.

Keira’s boyfriend Rupert Friend, was perfectly colour coordinated wearing a matching blue suit.

The list for Best Dressed Of The Week gets longer and longer.

Alexis Mabille showed his first collection at Paris Haute Couture Fashion Week back in June, so it is great for him that someone like Keira is wearing one of his dresses.