Mr. Big...Daddy!

Mr. Big’s big day may be happening real soon.

The 53-year-old Sex and the City star stopped by the Boom Boom Room gifting suite in L.A. this weekend and told actor Bill Bellamy his baby is due any day now, reports an eyewitness.

In November, Noth and longtime girlfriend Tara Wilson announced they are expecting a baby. Noth met Wilson when she worked at his New York bar, the Cutting Room.

I'm told they're having a boy.

At the gifting suite, Noth took a look at Bumble Bags diaper bags. “He asked if the baby is supposed to go in the bag,” the onlooker reports.

I think it’s safe to assume Noth was kidding. (At least I hope he was.)