Gretchen Mol is rounding out her empire.
The actress and her director hubby Tod "Kip" Williams welcomed daughter Winter Morgan Williams on Feb. 17 in New York.
"Everyone is happy and healthy and resting at home. The whole family is overjoyed," Mol's rep tells People.
The Boardwalk Empire star--who is somehow passing as Michael Pitt's mother despite being only nine years older than him in real life--and Williams also have a 3 1/2-year-old son, the very scholarly sounding Ptolemy John.
"I'm just enjoying this time," a pregnant Mol told the magazine. "We're not shooting now so I'm having a baby and then we'll start shooting again, which is great. It's really lovely to know I have a job coming and there's this little time and I can really enjoy it instead of feeling [stressed]."
She probably enjoyed it even more when she got to share in her first SAG Award win for Best Ensemble in a Drama Series last month.
WATCH: Boardwalk Empire's most winning star chats with E! on the red carpet