Heidi Montag of The Hills fame makes the rare move of posing in her UNDERWEAR

Heidi Montag has made the daring move by posing in her underwear for four new glamour photos shared to Instagram.

The Hills veteran was seen in a pair of black briefs as well as pink ones as she wore high heels while walking outside as if it was completely normal to go without a skirt or slacks.

The bold move was for a collaboration with Juicy.

‘Dreams come true! @juicycouture loves @parade and so do I! Don’t miss this epic collaboration!’ said the blonde beauty who is wed to her Hills costar Spencer Pratt.

She gained nearly 10K likes in just a few hours from her nearly 1M followers.

Montag added hashtags for pop culture, parade and Juicy. And she said ‘work it’ as well.

In one image she has on pink Juicy briefs with a red piping. She matched her pink top and jacket.

And she had on gold cage heels as she tried to open the door of a matte black car while holding a cell phone.

Her hair was worn down and she had on heavy makeup with a pearl necklace and large bracelets.

In another set up the star has on a pair of black briefs as she added a white blazer and a graphic T shirt with high heeled shorts boots in white as well.

Here too the TV veteran looked very glammed up.

And in a third set up the star has on undies with a jacket that is unzipped to reveal her generous cleavage. 

Heidi and fellow reality TV star Spencer have been married since 2008. 

The pair are gearing for season two of their reboot series The Hills: New Beginnings. 

This comes after news that Rod Stewart’s son Sean Stewart will be appearing in season two of The Hills reboot.

Sean, 40, began dating show star Audrina Patridge, 35, earlier this year, and has now begun filming episodes of The Hills: New Beginnings with her, according to Page Six.

Despite making appearances, sources have told the site he is not an official cast member.

Interestingly it was Audrina’s Hills connection that brought her and Sean together, according to Page Six.

The couple were introduced by Audrina’s costars Heidi Montag and Spencer Pratt.

Audrina and Sean were spotted on their first date earlier this month at Yamashiro in Los Angeles, according to E! News. 

The date was a set up, and Sean even arrived with a bouquet of roses for Audrina.   

‘Overall their mood was very chatty, upbeat and happy,’ an insider who saw the date said.

‘Their conversation looked like it was flowing easily with no awkward silences and Audrina was smiling a lot. It looked like there was a lot of flirting going on.’ 

At the time, a source told the site they were ‘definitely not dating,’ and a few days later a second report claimed they were casually dating.

‘Audrina and Sean are just getting to know each other, and neither of them are looking for a serious relationship right now,’ a source told Us Weekly earlier this month.

‘He is dating around, and they are not exclusively by any means.’

Audrina shares four-year-old daughter Kirra with her ex-husband Corey Bohan.

Sean, meanwhile, is already well-versed in the world of reality television.

On top of starring in the 2007 show Sons Of Hollywood, he appeared alongside his family in Stewarts & Hamiltons.