There's nothing Gucci about body-shaming. 

At least that's how Real Housewives of Salt Lake City fans felt after Mary Cosby seemingly shaded Heather Gay's form-fitting Gucci corset top on a recent episode of the Bravo series.

While appearing on Andy Cohen's Watch What Happens Live on Oct. 10, Mary was prompted to share her thoughts on Heather's fashion choices during a game of "Versace or Hibachi," in which you say the designer name if you like the look.

"Mary, did Heather get it right with this Gucci top and chain necklace?" Andy asked the reality TV star, to which she responded, "No. I don't think Gucci makes that."

When asked if she thought the top was fake, Mary continued, "Yes, I do. I've never seen a corset in a size 14." 

It didn't take long for Heather to stumble upon Mary's comments.

On Oct. 11, the Bravobybetches Instagram account shared a clip of Mary discussing her co-star's body size. But instead of giving Mary the cold shoulder, Heather took the high road.

"It's real," the Beauty Lab founder responded, referring to her Gucci top. "And it's spectacular!"

And while Heather kept a positive attitude, Bravo fans couldn't help but share their disappointment over Mary's remarks.

One Instagram user wrote, "She does know that the average American woman is a size 16 right? Also, Gucci carries up to XXXL and they carry up to 48 which is typically a size 16 in US sizes."

Another added, "Mary is just rude. She is not funny. She isn't 'keeping it real.' She's mean," while another fan noted, "Unbelievably rude to comment on a woman's size. Heather is stunning & a role model."

Of course, this isn't the first time Mary has made shocking comments towards Heather.

In the season four trailer of RHOSLC, which E! News exclusively revealed in August, Heather asked Mary, "Do you think I look inbred?" to which she bluntly replied, "I do."

See all of the drama unfold every Tuesday, when new episodes of The Real Housewives of Salt Lake City airs at 9 p.m. on Bravo.

And keep reading to learn more about season four.

After an icy season, Lisa Barlow is making amends with Meredith, one of her oldest friends, but they still have a long way to go. Lisa is forced to evaluate her new-wave Mormon lifestyle when her oldest son, Jack, is ready to leave the nest to find his place in the Mormon church and starts exploring the traditional elements of the religion. While Lisa enjoys the finer things in life, her luxuries and expensive taste rub some of the women the wrong way, leading to a confrontation with newest housewife Monica.

Monica Garcia is introduced to the group through her friend Angie, but the women quickly realize they recognize her through another familiar face. An excommunicated ex-Mormon, Monica is raising her four children on her own and running her baby products business. To add to her plate, she's also dealing with divorcing her husband for the second time and navigating a volatile relationship with her mother. Blunt, opinionated and never afraid to speak her mind, Monica has no problem saying what she's thinking, even if it lands her in hot water with the other women.

Thriving after the success of her book, Heather Gay earned a spot on the New York Times bestseller's list and bought a new house for her family. After publicly denouncing the Mormon church, her daughters are struggling with the fallout in the Salt Lake City community. Heather and Lisa finally find some common ground and "Bad Weather" makes strides to rebuild their trust in one another, but their relationship is far from fully repaired.

From friend to housewife, Angie Katsanevas owns and operates multiple hair salons around Salt Lake City with her husband, Shawn. When rumors begin to swirl about their marriage, Angie looks to find the culprit before the hearsay can do any damage to their family. Lisa loyally stands by her side as Angie navigates the group's tumultuous and ever-changing dynamics.

Meredith Marks continues to expand her successful jewelry line and donate her time toward charitable causes close to her heart. At home, the kids are thriving and her marriage with Seth is stronger than ever as the pair start a podcast to share advice and anecdotes. Tensions with the women explode when Meredith is accused of dropping bombshells without getting her hands dirty ... yet again.

Whitney Rose focuses her energy on launching a new luxury jewelry line that highlights spirituality and healing. As Justin heads back to work and Whitney dives into the launch of her new brand, the couple struggles to find a balance between life as CEOs and caretakers for their children. Whitney and Heather work on forgiveness and trust, but her relationship with Meredith strays beyond repair after an accusation that rubs Meredith the wrong way.

After a year away from the women, Mary Cosby is back with her unique, unfiltered opinions. Her friendship with Meredith is as strong as ever, but she struggles to find her footing with the other ladies as she navigates old wounds and potential new friendships within the group.

(E! and Bravo are both part of the NBCUniversal family)