Jon Kopaloff/FilmMagic
Lara Walsh
Sep 14, 2016 @ 10:30 am

It's been five years since January Jones welcomed her son Xander into the world, and now the proud mom is celebrating the milestone birthday with a sweet mother-son selfie and an even sweeter message.

"This one goes out to us my son.. 5yrs ago today I became whole because you came into this world," the 38-year-old heart-meltingly captioned the shot on Tuesday, Sept. 13, which shows a pink bespectacled Jones and her little tot cheesing for the camera.

This one goes out to us my son.. 5yrs ago today I became whole because you came into this world.

A photo posted by January Jones (@januaryjones) on

In the family photo, Jones, who played Betty Draper in the hit TV series Mad Men, and the toddler show off their glowing complexions, which the actress recently revealed to People is a result of their extensive skin care regimen.

"I'm really strict about getting him moisturized," the X-Men star admitted in the May interview, saying that she's not only incorporated her little one into her own beauty routine, but she's also given him free rein on his hair!

"When we go to the barbershop, he gets to choose his own hairstyle, and he gets a kick out of that and he takes great pride in that," she said.

RELATED: January Jones Explains Why She Loves Face Masks and Isn't the Biggest Fan of Working Out

We'll be keeping an eye out for the little family's birthday celebrations!

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