Pictures: Sienna Miller at the Theatre Royal

Boho chic Sienna Miller shows off her svelte figure in a barely-there sun dress after her performance in 'Flare Path' at the Theatre Royal in London. (Pacific Coast News)more pics » Sienna Miller (Pacific Coast News) Sienna Miller appears to have fully embraced her role as a fashion plate.

The British beauty has been spotted in a different outfit just about every evening as she makes her way out of London's Theatre Royal, where she is starring in a production of the 1942 Terence Rattigan play Flare Path.

Miller looked particularly summery this week, when she headed out in a little sundress and a pair of ankle boots. Miller was also spotted out with her rumored new flame Tom Sturridge this week. Things are heating up!

Browse the latest pictures of Sienna Miller (click any photo):

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