On a recent shopping trip to a Dillard's department store in Wichita, Kansas, a sales associate allegedly told Megan Naramore Harris' teenage daughter that she would need Spanx to wear the dress she was trying on.

Upset, Harris posted a photo of her daughter, Lexi, wearing the dress on Facebook - and included a lengthy caption directed at the store. She didn't name the employee in question.

Since Thursday, more than 30,000 people have shared the image and offered support for both Lexi and her mother.

Here's a look at the dress in question. "Dear sales lady at Dillard's Towne East Mall," Harris begins her post.

"I told you that she was just fine without SPANX," Harris explains in the post. "You [the sales associate] continued to argue with me."

Harris goes on to explain that she thinks her daughter looks beautiful, without Spanx. She also emphasizes that she wants people to share the post, so the sales associate might see it on Facebook and learn a lesson.

"My daughter is tall, she swims, runs, dances and does yoga. She's fit. She's beautiful. She did not need you telling her that she is not perfect," Harris writes. "I hope this is shared and gets back to you so that you should not say something like that to a girl ever again."

Harris' post has been met with lots of support from Facebook users. Several have even offered to loan her a dress for the formal dance she'd been shopping for in the first place.

"Lexi is indeed beautiful...just the way she is," writes one commenter. "The dress is a pretty ornament and absolutely no Spanx needed."

Tech Insider reached out to Dillards and to Harris to get more information about the incident.

Here's the statement from a corporate spokesperson for the department store.

At Dillard's, our mission is to help people feel good about themselves by enhancing the natural beauty found in all of us. We train our sales associates with the goal of creating a completely positive experience with each visit. It is certainly never our intent to offend our customers. We have reached out to this customer and her daughter, and we appreciate the outreach of so many of our followers and customers to bring this issue to our attention.