10/25/2007 AT 12:40 PM EDT
Pregnancy seems to agree with mommy-to-be Julianna Margulies. Looking gorgeous in a short, camel hair coat that showed off her ever-growing belly, the former E.R. star told PEOPLE she's "doing great" at Wednesday's Cinema Society premiere of Sidney Lumet's Before the Devil Knows You're Dead in New York City.
Even with the small bump under her coat, the Canterbury's Law star looked otherwise svelte, prompting one attendee to ask if she was pregnant. "I hope so, because if not, then I've just put on a lot of weight!" she joked.
The baby, which is her first, is due in "mid-January," says Margulies, who turned 41 in June.
She attended the premiere with her fiancé, Keith Lieberthal, and spent time chatting with Frasier star Bebe Neuwirth and designer Cynthia Rowley.