Actress January Jones, photographed in Los Angeles.
January Jones of Mad Men is now the mother of a little man.
Jones, 33, gave birth to son Xander Dane Jones on Tuesday. The identity of the baby’s father has not been disclosed.
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The South Dakota native, part of the insanely popular ensemble cast of Mad Men, is best known for portraying the repressed and shrill Betty Draper, and on the big screen, for her role as mutant Emma Frost in Matthew Vaughn’s X-Men: First Class. According to a rep, Jones and baby Xander are “doing great.”
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Kai Ma is a TIME contributor. Find her on Twitter at @Kai_Ma or on Google+. You can also continue the discussion on TIME’s Facebook page and on Twitter at @TIME.