12/05/2013 04:04 EST | Updated 12/06/2013 07:37 EST

Kate Middleton Recycles Roland Mouret Dress At Mandela Movie Premiere

BEN STANSALL via Getty Images
Britain's Prince William, Duke of Cambridge, and his wife Catherine, Duchess of Cambridge, arrive to attend the royal film premier of 'Mandela: Long Walk to Freedom' in central London on December 5, 2013. The film is adapted from former South African President Nelson Mandela's auto-biography and chronicles the life journey from his childhood in a rural village through his struggle for rights during the apartheid era and his inauguration as the first democratically elected president of South Africa. AFP PHOTO/BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

Kate Middleton sure knows how to shop her closet.

This time, the Duchess of Cambridge was spotted at the red carpet premiere of "Mandela: Long Walk To Freedom" on Thursday night in London, wearing a white long sleeved Roland Mouret gown, with quite the daring leg slit.

But this isn't the first time we've seen Kate wear this dress -- back in May of 2012, the Duchess wore it to the Thirty Club dinner at Claridge's hotel in London.

This time, the new mom accessorized with a chunky silver statement necklace, a simple black clutch, and black pumps. She also wore her famous brown locks in a swept-back ponytail and kept her makeup quite simple, save for her signature black eyeliner.

The Duchess was accompanied by her handsome Prince William, who looked very dapper in a classic tux and bow tie. Also at the premiere were the film's stars, Idris Elba and Naomie Harris.

We think Kate looks stunning, and we love that she made an old dress look brand new again by changing up her hair and accessories.

What do you think of the Kate's ensemble?

Check out more pics of her dress:

Photo gallery Kate Middleton's Most Memorable Royal Appearances See Gallery