Hello, and welcome to Exhibit #2876 proving that Sienna Miller is one of the most stylish women on the planet. From her early noughties boho days, all the way through to her enviably chic on-screen wardrobe in Anatomy of a Scandal, Sienna really can do no wrong in the fashion world. Now, for her latest event, she's gone and put her own spin on one of this season's hottest trends: cut-outs.

Overnight, Sienna attended The Sandman world premiere in London wearing *the* most breathtaking cut-out dress. Now, we've already seen our fair share of cut-out dresses, but Sienna's version is a whole other level of cool. Not only does she go for a heavenly powder blue and cream colour palette, the longer sleeves and hemline also make this look a very appropriate wedding guest look that we wanna copy.

Designed by Self-Portrait, Sienna's dress features a square neckline which then dips into a bow detail across the bust, beneath which sits the dainty cut-out panel. The ribbed lurex fabric then continues down to her lower calf, while the sleeves feature gloriously extra fluted cuffs.

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Sienna teams the look with strappy ivory sandals, believed to be The Row's cult-status pair, along with the oh-so-covetable Prada Cleo shoulder bag - another It-piece of the season.

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Beauty-wise, the British style icon goes for a tousled updo and natural makeup, with a soft glow and neutral lip.

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Yep, this is Sienna's world, we're just living in it.

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