Introducing Xander Dane Jones.
This week America's most glamorous housewife gave the world its first glimpse of her newborn son as she stepped out in sunny LA.
Cradling her tiny one-month-old baby in her arms, 33-year-old January Jones was seen leaving a local office building on Tuesday.
She held the little boy tightly to her chest, revealing his little face for the very first time.
CLICK ON PHOTOS FOR GALLERY
It was a week of firsts for Xander, who was introduced to his mum's Mad Men co-stars the previous day.
Proud January brought her son along to the set of the hit show on Monday as she prepared to reprise her role as Betty Draper.
And she couldn’t resist showing him off to crew members, who crowded round for their first glimpse of the baby.
Among the first to coo over Xander was actor John Slattery, who stars as Roger Sterling in the 1960s-set series.
Speaking after the birth, he told US Weekly that he has already seen a picture of the baby, adding: "He's beautiful. She (January) is in love with that boy."
January welcomed Xander, her first child, on September 13.
She is yet to reveal who the father of the baby is.
The actress has previously dated Ashton Kutcher, Josh Groban and Saturday Night Live's Jason Sudeikis.