"Flare Path" preview night after party at The Royal Horseguards in Whitehall Court. (Bauer Griffin)more pics » 
Sienna Miller (Bauer Griffin) Sienna Miller has returned to the stage in London's West End, with a starring role in Terence Rattigan's Flare Path. The play follows a woman torn between loyalty to her husband and a passionate affair with an old flame.
Miller looked lovely at the play's after-party in a hot little Twenty8Twelve dress and a sparkling Matthew Williamson jacket.
Not too long ago, Miller broke it off with her on-and-off love Jude Law, explaining that relationship had simply "run its course."
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Sienna Miller (Bauer Griffin) Sienna Miller has returned to the stage in London's West End, with a starring role in Terence Rattigan's Flare Path. The play follows a woman torn between loyalty to her husband and a passionate affair with an old flame.
