Sienna Miller Has A Pretty Ponytail

Sienna Miller is pictured leaving the Groucho club at 2am, having a good time with her friend on Tuesday (April 14) in London.

The 27-year-old British actress will be landing in Broadway in October, making her American stage debut in After Miss Julie.

“I’m scared obviously but really excited,” Sienna told Reuters. “Patrick Marber is, I think, one of the most fantastic writers.”

“If you want to be an actress you think about opening on Broadway,” Sienna said, who begins rehearsals on August 20 and starts preview performances on September 18.

10+ pictures inside of Sienna Miller having a pretty ponytail…