By InStyle Staff
Aug 18, 2015 @ 4:45 pm
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Jacopo Raule/GC Images; David Fisher/REX; Splash News

With the days of bohemian frocks, floppy hats, and slouchy ankle boots behind her, Sienna Miller is now all about protecting her refined edge. The British actress' Victoria Victoria Beckham dress, Prada shoes, Salvatore Ferragamo sunglasses, and Alexander McQueen handbag ensemble (above, right) is the perfect middle ground look that sums up her style. For a more glam look, Miller turned it up a notch as the 2015 Cannes Film Festival in Balenciaga (above, center) and then showed us how to master relaxed street style in a cream-colored Stella McCartney top paired with black trousers and suede mules (above, left). 

RELATED: Sienna Miller Showcases Her Toned Summer Bod in a Python Bikini

Inspired by Miller's timeless style? Revamp your wardrobe with these ladylike classics that have a kick of cool. 

The Oversize Sunglasses


Dior, $335;

The Cropped Shell


Tibi, $425;

The Structured Tote


Henri Bendel, $478;

The Bold Lip Color


Charlotte Tilburry 'Matte Revolution" lipstick in 'Bond Girl' (left) and 'Walk of Shame' (right), $32 each;

RELATED: Meeting Up with Bradley Cooper? Sienna Miller Knows Exactly What to Wear

The Tapered Pants


Theory, $285;

The Suede Mules


Trademark, $378;

The Sheath Dress


Vivienne Westwood Anglomania, $485;

The Slit Skirt


L'Agence, $325;

The Minimalist Heels


Barneys New York, $390;

Related Video: Kahlana Barfield is Obsessed With Shrimps x Sophia Webster Mules

RELATED: Replicate Chrissy Teigen's Easy Summer Style with 5 Pieces