January Jones pregnant: 'Mad Men' star expecting first child but won't say who father is

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January Jones is expecting her first child, her rep announced.

January Jones announced on Thursday night that she's preparing for a new role: mom.

The "Mad Men" star is pregnant, but staying mum on the details for now, People.com reported.

"January Jones is happy to announce that she is expecting her first child this fall," her rep said in a statement to the website.

While there's no early word on who the father is, the actress split with "Saturday night Live" star Jason Sudeikis in January.

At the time, sources told People.com that living in different cities -- Jones is based on Los Angeles while Sudeikis lives in New York -- made the relationship too difficult.

"But they could get back together," the source said at the time. "It was just hard to stay together with the distance."

The actress was previously linked to singer Josh Groban and Ashton Kutcher.

Jones is due back on the silver screen in the upcoming "X-Men" movie this summer.

nmandell@nydailynews.com

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