It’s A Boy For ‘Mad Men’s’ January Jones

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.