Luxury footwear label Aquazzura is inflicting pain on its competitors, and not just in the form of sky-high heels.

The Italian brand slapped Ivanka Trump and her eponymous shoe line with a trademark lawsuit Tuesday, accusing her of copying its designs.

The lawsuit states that Trump's line, which is licensed by co-defendant Marc Fisher, is guilty of "repeated infringement" and "deceptive trade practices" by knocking off Aquazzura's "Wild Thing" sandal. Referred to in court documents as one of the brand's best-known and best-selling models, Wild Thing retails for $785.

Fross Zelnick Lehrman & Zissu, P.C. Both of these things are just like the other.

Trump's "Hettie" shoe, above right, retails for $145 and does bear a striking resemblance to its pricier predecessor.

In court filings, Aquazzura said it previously complained to Trump about two other shoes that bear stark similarities to their "Forever Marilyn" and "Belgravia" designs, including photos of both versions.

Fross Zelnick Lehrman & Zissu, P.C. So much same.

Matthew Burris, CFO of Marc Fisher, said in a statement to The Huffington Post Wednesday that the lawsuit is "aimed at generating publicity."

"[The Hettie shoe] is representative of a trending fashion style, is not subject to intellectual property law protection and there are similar styles made by several major brands," he said. "The lawsuit is without merit and we will vigorously defend ourselves against the claim."

Aquazzura's founding designer Edgardo Osorio started fighting back on social media well before the lawsuit was filed. A quick perusal of his Instagram shows his disdain for Trump's practices started as long as 15 weeks ago, if not earlier.

One of the most disturbing things in the fashion industry is when someone blatantly steals your copyright designs and doesn't care. You should know better. Shame on you @ivankatrump! Imitation is NOT the most sincere form of flattery. #aquazzura #ivankatrump Proud of mine #madeinitaly #italiansdoitbetter 🇮🇹🇮🇹🇮🇹 A photo posted by Aquazzura by Edgardo Osorio (@aquazzura) on Mar 4, 2016 at 5:30am PST

But Osorio was quick to point out his problem is with the industry, not Trump personally, as he explained to Footwear News in May.

“I have nothing against Ivanka Trump," he said. "It’s not only her, and I’m glad to [call others out on Instagram also]. I plan to do the same with Steve Madden and other people who have ripped us off.... Sometimes I look at the buys in department stores, and I see copies of my shoes. We need to be harder with our retailers. They need to protect us. You can’t cannibalize one business with another."