Sienna Miller: Smiley Stage Door Lady!

Sienna Miller grins wide as she exits the stage door of the Royal Theatre in London, England on Friday (May 6).

The 29-year-old British actress is currently performing in the hit play, Flare Path by Terence Rattigan, directed by Broadway and West End big shot Trevor Nunn.

Sienna has been performing with the show since March, and it was recently announced that the show will close on June 11th, after a very successful run.

The blond beauty was caught leaving the theatre last week, and signed autographs for fans afterwards!