10:05 AM PT -- Matthew Burris, CFO for Marc Fisher -- Ivanka's licensing company -- says, "This is a baseless lawsuit aimed at generating publicity. The shoe in question 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 adds, "The lawsuit is without merit and we will vigorously defend ourselves against the claim." Ivanka Trump's shoe line is a shameless knockoff of a wildly popular Italian stiletto ... so claims the Italian shoemaker.
Aquazzura claims in a new lawsuit, Ivanka's Hettie shoe is almost a carbon copy of its Wild Thing pump ... a shoe that protects the feet of the famous-ish, including Solange and Olivia Palermo.
Aquazzura points to the color, shape and silhouette, as well the fringe covering the toes to the tassel on the heel.
Aquazzura says Ivanka jacked their shoes before ... copying its Belgravia shoe and calling it Necila, and also copying its Forever Marilyn shoe and calling it Teagin Pointy Toe Pump with Tassel.
That's shoe biz ...