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Derek Lam accuses Ivanka Trump of copying shoe design

Ivanka Trump attends the premiere of "The Way" on Oct. 5, 2011, in New York. Getty

(CBS) Fashion designer Derek Lam is taking legal action against Ivanka Trump, claiming a sandal that's part of her footwear line is a copy of one of his designs.

WWD reports that Lam's legal team sent a cease-and-desist order to Trump's shoe company, Ivanka Trump Footwear, and its distributor, Marc Fisher Footwear, demanding that the company pull the shoe from stores within seven days.

Pictures: Ivanka Trump

Lam claims that Trump's Cadie wedge sandals, which retail for $150, are too similar to his Ayami wedge sandals, which sell for $780, according to the report. (You can see the shoes side-by-side here.)

Derek Lam CEO Jan-Hendrik Schlottmann told WWD that one of the company's shoe designers spotted Trump's sandals while shopping on Bloomingdales.com.

"We have seen very similar copies before but we have never seen a shoe that perfectly copied," he said. "It's such an investment to make a shoe ... we had to protest this."

Marc Fisher Footwear denied the claims on Thursday.

"The Lam wedge sandals are of a popular design type that has been used by numerous manufacturers for many decades," the company said in a statement, obtained by People magazine. "There is nothing iconic about the appearance of the Lam sandal."

Trump, who stars alongside her father, Donald Trump, on "The Celebrity Apprentice," also designs eponymous lines of jewelry and handbags.

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