Jake Gyllenhaal may be the Prince of Persia, but at the world premiere of his new movie on Sunday night in London, the red carpet was reigned by his gorgeous costar, Brit beauty Gemma Arterton, who dazzled in a princess-like couture. The brunette babe looked absolutely breathtaking a nude, heavily embellished Valentino gown from the Pre-Fall 2010 Collection.

PHOTOS: Gemma Arterton, Jake Gyllenhaal, Paloma Faith, Kerry Katona And Sir Ben Kingsley At The London Premiere Of The Prince Of Persia

Gemma’s hair was parted on the side and pulled tightly back into a fan-like pony-tail, while perfectly-painted red lips graced her flawless face.

PHOTOS: Gemma Arterton’s Bombshell Style

Jake looked dapper in a perfectly tailored, 3-piece suit, as did Sir Ben Kingsley, who regally added a purple tie.

For more on Gemma, who is sure to be the next big screen bombshell, check out her Style gallery!

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• Style
• Gemma Arterton
• Jake Gyllenhaal
• Kerry Katona
• Paloma Faith
• Prince of Persia
• Red Carpet
• Sir Ben Kingsley