Ashley Graham modeled a sizzling red dress at a Revlon event this week, and she wasn’t shy about divulging what undergarments she was — or rather wasn’t — wearing. 

The 31-year-old, who is an ambassador for the beauty brand, took to Instagram on Wednesday to share photos of herself striking a few sultry poses while holding a bottle of Revlon’s new PhotoReady Candid Natural Finish Anti-Pollution Foundation.

Ashley showed off her enviable curves in her plunging fire-engine red dress, and she was proud to say that she wasn’t wearing a bra or any constricting shapewear whatsoever.  

In the first image, the curvy model is lying on her side with her head resting in her hand. The pose puts both her ample cleavage and her hourglass figure on display. 

‘Your boobs are defying gravity! Hahaha tell us your secrets!!’ one fan wrote in the comments, and Ashley was happy to oblige. 

‘It’s the dress!!! No bra or shape wear life!!!’ she explained, adding: ‘and no tape.’ 

Ashley is in the same pose in the next snapshot, but her eyes are closed, revealing her metallic eyeshadow.

She is also sporting vibrant red lipstick, and her chocolate brown waves are pulled up in a half ponytail. 

Another image shows her looking over her shoulder with the foundation in her hand. 

The final picture in the series gives Ashley’s 7.8 million Instagram followers a look at her head-to-toe outfit. 

Her V-neck halter dress hits just below her knees and features a silver zipper in the back that runs down the length of her body. 

Ashley topped off the eye-catching outfit with a pair of red patent leather heels that perfectly matched the color of her dress.  

The Sports Illustrated star’s ensemble was certainly a crowd pleaser, as many of her fans commented: ‘I need that dress!’ 

Ashley also took advantage at the event itself to celebrate her easy breezy attitude for the event, telling the crowd that she had chosen to go without ‘a bra or Spanx’ and joking that her candid confession made her the perfect person to front the new Revlon collection. 

She also spoke about the fact that the PhotoReady Candid Collection features formulas that are free from parabens, phthalates, artificial fragrances, artificial dyes and oils, while celebrating how good the new Natural Finish Anti-Pollution Foundation looked on her skin. 

Ashley signed a contract with Revlon in January, becoming one of the first big-name plus-size models to land a beauty contract with such a famous brand.   

‘Historically, curvy girls are not given beauty contacts,’ she told WWD at the time. ‘It’s kind of groundbreaking, because in my generation of models, this hasn’t happened yet. This is one of those moments where I’m over the moon, I cried a little.’

The history-making model and body positivity advocate is known for showing off her famous curves on Instagram, but some commenters have accused her of losing weight over the years when actually the opposite is true. 

‘It sucked that everybody had to go in on me like, “Oh, you lost so much weight.” If these people actually knew me — which, you know, they don’t and maybe never will— they would know that my body just hasn’t changed,’ she told Glamour. 

‘To be completely honest, I’ve gained weight in the last five years, not lost weight. If you actually look at my IMG Polaroids from when I first signed with them to now, you can tell I’m thicker. I mean, it’s just age. Geez. Whatever!’