When I was in Japan last month, about every other girl was wearing some iteration of the sequined Kitson bag. After all, there are two Kitson boutiques in Tokyo alone.

But with great success comes great copies. It seems that Kitson’s accessory licensee has capitalized on the world’s love of the Kitson bag without the company’s permission, according to WWD.

While Lucas Design had permission to manufacture and sell other Kitson-labeled accessories, the company was not–according to Kitson–permitted to produce tote bags. Kitson is suing Lucas for breach of contract, trademark infringement and dilution and counterfeiting.

This is a tough one, given Lucas Design’s ownership of Kitson’s master license. We’ll keep you updated as to how this shakes out, if it indeed goes to trial.