She’s kept mum so far about her pregnancy, but Sienna Miller’s growing belly speaks louder than words.

The 30-year-old actress was spotted at a W magazine reception in New York on Tuesday wearing a slinky black gown that showed off her baby bump.

Miller is reportedly expecting her first child with boyfriend Tom Sturridge, although neither have confirmed rumors of the relationship or whether he is the baby daddy.

Interestingly, Sturridge did not attend the event even though it was held on Valentine’s Day. Also noticeably absent: the diamond and platinum ring that Miller was seen wearing in London last week.