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.

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.

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

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

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