Sienna Miller Pregnant, Stood Up on Valentine's Day?

Actress Sienna Miller is rumored to be expecting her first child with boyfriend Tom Sturridge, who she may also be engaged to although he failed to show up as her Valentine's date.

Miller was seen Tuesday night in New York City for a fashion video exhibit by Solve Sundsbo, People magazine reported. The event was titled "The Event Changing Face of Beauty" and took place at the Park Avenue Armory.

Despite the fact that it was Valentine's Day, the actress was spotted alone. People did however add that she was wearing a tight fitting, black dress that appeared to expose a baby belly.

It had previously been confirmed by US Weekly that the couple was expecting a child, although they did not have immediate plans to marry. "Friends are really happy with her relationship with Tom," a source told the magazine. "He's younger, yes, but he's mature and he's a good guy."

If those rumors were not enough to convince fans, the Huffington Post later caught on to the Twitter account of Miller's sister, which also appears to confirm that the rumors are true. Earlier today that actress' sister Savannah tweeted "THRILLED," to which a follower responded "no greater feeling than welcoming a new life into the world in the comfort of home." Savannah replied "thank you."

Sienna Miller split with Jude Law around this same time last year after it was rumored that he had cheated on her. It now appears that the actress has officially moved on. She began dating Sturridge shortly after her break up with Jude Law. However, despite engagement rumors the actress was not wearing an engagement ring.

Mail Online reported that Cate Blanchet, Olivia Palermo and Evan Rachel Wood also attended the fashion event. Many applauded her gown choice, suggesting that it nicely showed off her baby bump. "Wish all pregnant women would dress like this!" Donna wrote on the Mail Online blog. Other shared similar views.