Samantha Cameron, Carla Bruni and Michelle Obama have all been voted onto the style elite of Vanity Fair’s 2010 International Best Dressed List.

The eight-month pregnant UK prime minister’s wife joins regulars Bruni and Obama along with other notable UK style icons David Beckham and Lady Gaga. According to Vanity Fair, Mrs Cameron is the ‘UK First Lady’, and wears the ‘realpolitik’ look. The magazine also lists Mrs Cameron as employed by upmarket stationers Smythson as a creative director.

In a comprehensive detail of the PM’s wife, Vanity Fair says Mrs Cameron, 39, is often seen in numbers from Erdem and Phillip Lam, accompanied by bib necklaces, brooches and chain pendants. When it comes to dressing down, Mrs Cameron can be seen sporting a pair of sneakers and more often than not, a pram. Tickets for Troops, the returned services organisation set up by the Tories last year, is listed as her favourite cause. Mrs Cameron is known to have close ties in the fashion industry, with her sister being deputy editor at British Vogue.

Aside from her fabled dolphin ankle-tattoo, Mrs Cameron is best known for sporting a £65 grey polka dot dress from high street retailers Marks and Spencer to augment the austerity theme of last year’s Conservative Party conference.

The Vanity Fair list, which has been one of the key indexes for fashion heavyweights for the past 71 years, also featured Princess Mary of Denmark, Helena Bonham Carter, John Galliano, Martin Scorcese, Alec Baldwin and Javier Badem.