Sienna Miller Is All Smiles

****NO GERMANY / SWITZERLAND****.Sienna Miller looks very happy as she leaves the theatre. She has revealed her secret to her stage fright battle is gallons of camomile tea. (Bauer Griffin)more pics » Sienna Miller (Bauer Griffin) Sienna Miller is loving life! Or at least she wants people to think she is. The British blonde was all smiles on Wednesday, when the paparazzi captured her exiting the theater where she's been performing for the past couple of weeks. Imagine that!

Miller was comfortably chic in baggly slacks, a simple gray blouse and a fuzzy sweater. Pretty turquoise earrings dangled from her ears.

Do you think she's smiling 'cause she's got a new beau? Or just because she's loving the single life?

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