It's A Boy For January Jones!

January Jones shows off her baby bump at the premiere of "X-Men: First Class" at Ziegfeld Theatre in New York City on May 25, 2011 January Jones shows off her baby bump at the premiere of

January Jones is a new mom!

The “Mad Men” actress welcomed a baby boy, named Xander Dane Jones, on Tuesday, her rep confirmed to People.

Both mom and baby are “doing great,” the rep told the mag.

The “X-Men: First Class” actress confirmed she was expecting back in April. She has not commented on the father of the child.

Xander is January’s first child.

A rep for the actress did not immediately respond to a request for comment from Access Hollywood.

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