iFashion counts down the five best dressed celebrities of the year, who have dolled up, dressed down and burst onto our fashion radar.

5. Rooney Mara
Relatively new to our fashion radar, Rooney Mara’s enviable array of red carpet looks have got us hooked on the good-girl-gone-tough personal style. Most definitely one to watch in 2012, Rooney has yet to put a foot wrong in the style stakes and for a red carpet novice, that is surely a worthy commendation.

4. Kate Bosworth
The Beautiful Bosworth is a worthy top fiver. With her LA boho babe day attire to her classical and chic evening wardrobe, it is no wonder we are so envious of her look. Looking equally as good in cowboy boots and a chunky Marant knit as she does in a LBD, Bosworth is a style maven to be inspired by.

3. Kate Middleton
Another Kate on our list; except this one is a lot closer to home and also happens to be a Royal! Kate skyrocketed onto best dressed lists the world over, time and time again, following on from the Royal wedding. With her enviable and oh-so-bouncy mass of hair and princess perfect, lady-like ensembles, Kate has become the nation’s sweetheart and style queen in one fell swoop.

2. Elle Fanning
Not since Drew Barrymore has a 13-year-old become such a fashion icon (albeit not quite in the same way). Porcelain skin, bright blonde hair and an innate sense of style has admittedly made us jealous of a tween-ager.

1. Rosie Huntington-Whiteley
As if being voted the sexiest woman of the year isn’t quite enough, Rosie has topped iFashion’s best dressed list for 2011. Demonstrating the perfect off-duty model wardrobe and a collection of bombshell appropriate evening gowns, Rosie kills it every time. But then again, so would we if we had those legs…