January Jones, 47, shows off enviable figure in nude underwear

She must be driving men mad!

January Jones flashed her svelte figure in a lingerie selfie shared to her more than 1 million Instagram followers Sunday.

The “Mad Men” alum, 47, showed off her ripped abdomen and toned legs while posing in nothing but a matching nude underwear and bra set.

“Knees are weak, sleep is sweaty, attitude petty…never let my strength leave me,” she captioned the sultry snap.

Jones accessorized with a simple necklace and wore her short blond hair down in a messy blowout around her striking cheekbones.

She captured her toned tummy while standing in a beautiful bathroom featuring a clawfoot tub and a glass standing shower.

Jones appeared particularly proud of the image as she also shared it to her Instagram Story, along with the song “Pop Out” by Charlieonafriday.

Several fans flooded the comments section of the actress’ post to rave over her fit physique.

“I fell in love with January watching Mad Men long ago. Such a beauty 😍,” one fan wrote below the photo.

“No one is mad at this January,” a second person punned, referring to her popular drama that ran for seven seasons from 2007 to 2015.

“Dammmmmn you look gorgeous,” a social media user raved, with another dubbing her an “Incredible beauty!”

The Emmy nominated actress is no stranger to showing off her body online.

In 2021, she posted a topless photo in which she wore nothing but a pair of pink Rodarte pants and used her hand to cover her chest.

“Can’t find a top to do these trousers justice so… 🤷🏼‍♀️,” she joked in the caption of the post.

Jones touted her youthfulness that same year when she wore the same sensual red gown by Versace that she had worn ten years prior.

“10yrs later and it still, (sorta), fits,” she shared on Instagram.

She posted another Instagram Story image of herself in the stunning garment while holding a doughnut, joking of the sweet treat, “Part of the problem…also I had a child.”

Jones has a 13-year-old son named Xander, though the identity of his father has not been made public.

“That’s my son’s business. It’s not the public’s business,” she explained to the New York Times in May 2013 of why she hasn’t revealed the name of her son’s dad.

The rarely seen teen looked as tall as his mom while attending Oceana’s 18th Annual SeaChange Summer Party last month.

The “X-Men: First Class” star previously revealed that she enjoys being single, admitting that she doesn’t feel like she needs a partner.

“Do I want one? Maybe. But I don’t feel unhappy or lonely,” she told the newspaper.