Sienna Miller's best street style moments

At the Cannes photocall for Horizon: An American Saga, Sienna tapped into one of the hottest denim trends of the moment: balloon jeans. Expanding at the knee before tapering in at the ankle, the style is unexpectedly super flattering. Sienna paired her dark denim wash pair with a cream blazer with playful, surrealist gold motifs, courtesy of Schiaparelli. 

The actress made her presence known at Paris Fashion Week in head-to-toe Chloé. She layered a whimsical white lace slip under a heavy-duty leather jacket and completed her ensemble with vertiginous wooden wedges.

The Anatomy of a Scandal star went for simplicity, opting for a light collared knit, tinted shades and a black skort with a distinctly sporty feel.

Sharp and elegant, Sienna wore a beige double-breasted suit to Wimbledon with acetate accessories and kitten-heel mules.

The Burnt actress oozed sultry, 1970s spirit in a plunging camel and brown dress, styled alongside a mirrored clutch and blue suede platforms.

Sienna served up pretty, summer elegance in a lace Bardot dress, styled with a black leather belt focal point for a bit of edge. Her snakeskin T-bar sandals provided a sense of texture, and she opted for a blurred red lip for a pop of colour. 

Sienna exuded after-hours sultriness in an all-black ensemble. The actress styled a cut-out LBD over stirrup-style lace leggings alongside a formal overcoat and stilettos.

The picture of easy-breezy summer cool, Sienna wore a blue and white striped shirt with matching wide-leg trousers and a cream top-handle bag.

The actress was a 1970s dream in a ruffle multi-coloured knit and high-wasted jeans paired with a monochrome structured shoulder bag.

The street style maven delivered a corker with this orange short-sleeved midaxi featuring a pretty daisy print. Sienna styled the piece with barely-there sandals and a gold clutch.