Now that’s a stretch.

An online fashion retailer claims to specialize in empowering clothes for curvier bodies but bizarrely uses ultra-thin models to demo their garments — by stretching them out to show just how “oversize” they can be.

When Kristin Russell, 31, of Falls City, Neb., scrolled upon a Twitter ad for Plus Size Baby, she was excited to find an e-tailer offering “nice” items that are difficult to find — she wears a size 24 — in brick-and-mortar stores.

After clicking, however, she was left “shocked and disgusted.”

“I saw one of their photos of a stick-thin model wearing a pair of underwear and she was stretching it out with her hands as far as it would go,” Russell tells Caters News. “I thought it must have been a mistake . . . but the website was full of them, and they just got more offensive as you keep looking.”

Instead of hiring “curve-inclusive” models, the Plus Size Baby site uses petite posers — including one who advertises a pair of black leggings by putting both of her legs into a single pant leg.

Russell admits that, at first, the images made her feel bad — but then she got mad.

The “deeply offended” mom and restaurant owner decided to express her anger online in an emotional Facebook post. She was shocked when it racked up more than 40,000 likes and shares in less than 48 hours.

When you’re ordering online, all you have to go off of is seeing how that item of clothing fits somebody else, so you can imagine how it would look on you,” Russell says. “But you can’t compare when they’re advertising this way. It’s impossible. The cherry on top was when they put a girl in one pant leg. It’s just bizarre and so demeaning.”

Russell wasn’t alone in her outrage. Social media watchdogs who spotted Plus Size Baby’s Twitter ad campaign accused them of “mocking” women who wear larger sizes, sparking a rash of tweets that landed the brand on “Today.”

“I never expected the post to go so viral, but it’s obvious with how many shares it’s got that lots of people feel the same way that I do,” Russell says. “I really just hope that the company takes these comments seriously and considers changing their website. You want to feel sexy when buying lingerie, regardless of what size you are. Sadly, nothing about their website made me feel good.”

Plus Size Baby has yet to respond to Russell’s call for action, but the website does feature this message: “Plus size models promote the beauty of the female body as it is and prove that ladies do not need to starve to death to look sexually appealing … If you belong to those who are proud of their bodies without dieting, you have come to the right place.”

This isn’t the first time a fashion site has been called out for offensive plus-size clothing promotions. Wish.com was blasted in 2017 for depicting a model with her entire body stuffed inside a pair of sheer tights to demonstrate their capacity.