Sienna Miller Steps Out with Pooch Bess

****NO GERMANY / SWITZERLAND****.Actress Sienna Miller is seen leaving the Theatre Royal Haymarket with her pet pooch Bess, Sienna had just performed in the stage production of World War Two stage drama "Flare Path," written by Terence Rattigan. (Bauer Griffin)more pics » Sienna Miller (Bauer Griffin) Sienna Miller loves her dog so much, she brings her with her to work. Luckily, Miller has the sort of job where she can pull off that business whenever she likes!

These days, Miller is performing at London's Theatre Royal Haymarket in a production of Terence Rattigan's 1942 play Flare Path. After the show, Sienna always emerges to a flurry of flashbulbs. This time around, she carted her fluffy black dog along with her for the ride.

Isn't Bess a severe cutie?

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