Sienna Miller leaves the Theatre Royal Haymarket in London. Photo: Rex Features
When it comes to celebrity street style, Sienna Miller always tops the best dressed lists. She is the queen of that effortless, laid-back look that we often try to achieve but can never quite get right and last night, she pulled off another cool, care-free ensemble.
After finishing a performance of Flare Path, Miller was spotted leaving London's Theatre Royal Haymarket showing off her best summer style. The actress teamed her striped tunic dress with suede ankle boots and a tan shoulder bag. It's simple, chic and exactly why we love Sienna's off-duty outfits. Let us know how you rate her latest look and see some of the star's best fashion moments to date below.
The Perfect 10: Sienna Miller
Is this Sienna's best red carpet moment to date? She looks stunning in a backless Matthew Williamson gown at the Baftas 2007.
The Factory Girl opted for another backless number at the 2008 Bafta Awards. This time she opted for a slinky Dior gown and Chopard jewels.
Sienna Miller wows in red at the Valentino 45th Anniversary celebration, back in July 2007. She opted for a spectacular Valentino gown, of course.
The Layer Cake actress looked pretty in pink in this strapless number at the Montblanc Signature for Good Charity event in 2009.
She wore her favourite designer, Matthew Williamson, to pick up her award for Elle Style Icon in 2009.
The perfect LBD! Miller looks radiant on the red carpet at the opening of the House of Esquire in LA.
The star of GI Joe arrives at a screening for the movie in LA. Sienna oozed Hollywood glamour in this gold gown teamed with ruby red lips and curled locks.
Sienna sparkled in a Swarovski embellished mini dress from her own Twenty8Twelve collection to the 2009 MTV Movie Awards.
Sienna Miller on the red carpet with Jude Law at the 2010 MET Ball. Sienna dazzled in a low-cut Pucci gown.
The Alfie star looked gorgeous in a nude, Stella McCartney gown at the Unesco Charity Gala in October 2010. She can't keep away from that red lipstick!