January Jones Strips Down, Shows Off Dramatic Look

joked she needed to showcase her 'tan' as she posed in her underwear on Tuesday night. 

Taking to Instagram, the Mad Men star, 47, posed in a modest beige bra and satin lace shorts from Doen. 

Pinning her blonde locks back with a white pearl covered clip, she accessorised with a pair of thin-rimmed glasses as she took the snap in her bathroom. 

She captioned the post: 'Realized I better have photographic evidence of me with a “tan” as it rarely happens..'

The snap comes after January showed off her dramatic transformation in a new social media post as she celebrated the start of spring break with her followers on Monday.

She slipped into a green satin co-ord from Doen as she posed up a storm in the elegant matching shirt and shorts teamed with 60s-style sunglasses.

The actress' look was a nod to her performance in the AMC hit, which aired from 2007 to 2015.

January famously starred as the emotionally distant housewife Betty Draper alongside Jon Hamm (Don Draper) in the acclaimed series. 

In December, January revealed her battle with the  as she hit out at a family member for treating it as a joke.

The actress took to Instagram to speak about the condition, which causes extreme discomfort in response to certain sounds.

'For today, I'd like to talk about something that I've been struggling with my whole life, which is called misophonia. And it's gotten progressively worse over the years,' the Emmy-nominated star shared in a clip.

'I have a brother-in-law whose favorite food is chips,' January went on, adding, 'Just all the time, he eats chips.'

'I have talked to him about this many times and he seems to think it's funny to eat chips around me now, because it's an ongoing joke to see what happens and see what I do. I just think it's really unkind to my issue and also very dangerous for him.'

'So what I didn't do today, was record this video inside a prison. Because I've imaged many ways to do it. But I haven't. I didn't. Not yet,' she humorously added.

'Otherwise, he's a really nice guy. And it's his birthday today, so happy birthday. I hope you're eating a f**k load of chips,' she concluded.

In her caption she jokingly wrote, 'I didn't do it… today.' 

A number of fans related to the star in the comments, with one writing, 'I have it too. It’s so hard at times. Really great to hear someone openly talk about it in this way. I genuinely for years since I was a child thought it was just me and as I’ve gotten older realized it’s an actual thing. Which actually needs support from friends and family.'

'Omg I can’t stand slurping, repetitive sniffing..it drives me crazy!!' another wrote.

A visceral feeling of disgust upon hearing someone chew a crunchy snack or clear their throat is a sign of misophonia, which affects approximately five percent of the US population, equating to roughly 17 million people.

Scientists at the University of California, Berkeley and the Hashir International Specialist Clinics & Research Institute for Misophonia, Tinnitus and Hyperacusis in London believe the condition goes beyond the lens of auditory processing or sensory hypersensitivity.

New research suggests that at its core, misophonia is linked to a few key mental patterns. 

People with the condition often have more trouble shifting their focus away from negative emotions and tend to get stuck in cycles of repetitive, negative thoughts, a process known as rumination.

They also frequently report feeling mentally rigid. Instead of the emotional state passing, the mind gets locked onto it, which fuels the intense reaction and the cycle of rumination that often follows. 

Importantly, these traits are specific to misophonia itself and aren't just side effects of common issues like anxiety or depression.