Sienna Miller was on the Broadway stage just weeks ago in Cabaret, but on Monday night she was back to being an audience member supporting fiancé Tom Sturridge as he took to the stage in new play American Buffalo. The 33-year-old was clearly excited for her partner, with whom she has a two-year-old daughter called Marlowe, beaming as she arrived at the Wyndham Theatre in London.
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Sienna Miller and Tom Sturridge at the American Buffalo after party
Once again cementing her style icon status, Sienna chose a slouchy black top and matching trousers for the evening, which featured a colourful space-themed pattern. She teamed the laidback ensemble with a pair of chunky peep-toe heels.
The American Sniper actress finished off her outfit with a colourful small red leather cross-body bag and a pair of golden statement earrings. She wore her blonde cropped hair swept to the side and left slightly dishevelled, completing the look with a slick of dark red lipstick.
Sienna took a break from the spotlight after giving birth to her daughter back in 2012, but the actress has made a stylish comeback, turning heads in a series of fashion-forward ensembles.
Sienna enjoyed a night off from mummy duties
After giving birth, the Alfie star told French newspaper Le Figaro that as a new mother, she didn't have much time for fashion.
"I don't know what the new fashion trends are!" she admitted. "With my daughter, Marlowe, I don't have time to follow this anymore.
"I love fashion but I'm not obsessed by it. I love work, my style, but I don't think only about that, even though some people want to believe the contrary. I don't wake up in the morning, saying, 'Hmm, what an icon I am!'
"My life is very different; I've got a baby who leaves me only two hours of peace each night."