And next up, the winner for 'Best On-Screen Dirtbag' at the 2012 MTV Movie Awards goes to....the lovely leather LBD clad Jennifer Aniston!

The former girl-next-door has done everything in recent years to rid herself of her American sweetheart image and with her hilarious performance in Horrible Bosses last year and this luxe leather Valentino dress we'd say Rachel is well and truly gone. We love Jen's twist on her signature simple style with the body-con leather LBD accentuating her curves and the one-shoulder style showing she's still one step ahead of the fashion pack. Invest in the best like Jen and get her new look with Littleblackdress.co.uk here:

Urbancode Suede Dress in Black, £215, Rok Chix Silver and Gemstone Spinning Ring, £45, Bourne Alana Shoe in Black Print, £162.