Valerie Bertinelli made a very rare move of posing in her lingerie for an image shared to Instagram on Tuesday.

The Hot In Cleveland actress was in a black bra with matching underwear as she flashed her tummy. She impressively had abs and a small waistline.

The 64-year-old star also showed off her toned arms while she went makeup free with her dark hair down over her shoulders.

It was a bathroom selfie taken in a New York City hotel as she held onto a hair of box hair dye before darkening her roots.

Her caption had her usual brave candor and easygoing sense of humor. 

'At some point I will talk about the madness my body has been through this year,' she wrote to her 1.6M followers.

'But right now every lump, bump, wrinkle and saggy part of me just feels acceptance and simple appreciation to be standing in front of a mirror in a hotel bathroom in downtown Manhattan ready to color my roots late on a Monday night.'

Bertinelli has been busy these days.

She is working with friend Drew Barrymore on her talk show in NYC.

Valerie - who used to be wed to Eddie Van Halen - is also getting over her split from lifestyle writer Mike Goodnough, 53.

They broke up in early November after 10 months of dating. He is 10 years younger than Valerie. 

In March and noted at the time that she had created a 'three-week rule' whereby they would never go longer than that period of time without seeing each other but admitted that has been a 'challenge' for them both.

She told People: 'It's been challenging. The summer has been booked full. It is challenging!'

The former Touched by an Angel actress also noted that this time round she is ready to keep her relationship more private.

She said: 'A part of me is just like, it's been so public and now I'm trying to pull back and make it so much less public, and try to keep some stuff for us now.

It's like, 'Oh, but, yeah, I let the cat out of the bag.' I don't know. I would like to start keeping it between us and make it a little bit more special.'

'Even though I was so public with it, now part of me wants to just protect. He's terrific.'

Valerie previously explained that the upon one of their first meetings earlier this year, she knew that everything felt 'incredibly right' as she embarked on her new relationship.

She said: 'I'm driving up to meet him, and he's already at the hotel standing outside. I just jump out of the car, and I run to him, and I hug him. It was the best hug. I immediately felt like I was home. This is where I belong, in this man's arms. It all feels incredibly right.'

In April she Bertinelli said she 'can't just blame' her ex-husband for their 'toxic, horrible marriage'.

The actress acknowledges that Vitale wasn't entirely responsible for their failed marriage.

During an appearance on The Drew Barrymore Show, Valerie explained: 'I can't just blame my ex-husband for a toxic, horrible marriage. It's not his fault.

'What led me to that? Oh, childhood! That's the stuff I got to start working on.

'I've found that when my gratitude is really placed in even the challenging, hard times, that's when the growth really happens.'

Valerie explained that she's still working through her own childhood trauma.

The actress acknowledges that her troubled past continues to influence her life.

Valerie said: 'The business can really mess with a child's head. I'm going back to the childhood stuff and working on that.'