Sienna Miller Debuts Baby Bump

Access Hollywood
Sienna Miller steps out with a growing baby bump at the 'The Ever Changing Face of Beauty' W Magazine opening reception at the Park Avenue Armory in New York City on February 14, 2012 -- Getty Premium
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Sienna Miller steps out with a growing baby bump at the 'The Ever Changing Face of Beauty' W Magazine …

Sienna Miller has remained mum about her reported first pregnancy, but the actress stepped out on Tuesday night and let her growing baby bump do all the talking.

The 30-year-old actress, who is reportedly expecting her first child with boyfriend Tom Sturridge, 26, stepped out at the "The Ever Changing Face of Beauty" W Magazine opening reception in New York City in a form-fitting black gown that showed off her bump.

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Sienna, who walked the red carpet solo on Valentine's Day, did not speak to the press at the event that also had Cate Blanchet, Olivia Palermo and Evan Rachel Wood in attendance.

According to Britain's The Daily Mail, the was actress was spotted leaving a club in London last week wearing what many believe was an engagement ring on her wedding ring finger.

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As previously reported on AccessHollywood.com, last month a source told Us Weekly that Sienna and Tom's loved ones "were not surprised by the news of the pregnancy. They just spent the holidays in Paris together after they announced the news in London."

In February 2011, Sienna ended her relationship with Jude Law for a second time. The former couple began dating in 2004 and first split in 2006.

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