Lindsay Lohan Sued Over Fake Tan Spray

07/07/2009 at 12:30 PM EDT

Are Lindsay Lohan's claims that she invented a fake tan spray ... well, fake?

A Florida chemist, Jennifer Sunday, has filed a lawsuit in Tampa federal court claiming that Lohan and a Nevada woman stole the formula for the spray – Sevin Nyne – from her, according to the St. Petersburg Times.

Lohan and Lorit Simon, a Las Vegas businesswoman who air-brushes tans for celebs, launched Sevin Nyne in May, claiming it took them three years to create it.

Sunday is now suing Lohan, Simon, and Simon's company for breach of contract, theft of trade secrets, civil conspiracy, intentional interference with contractual relations and deceptive and unfair trade practices.

"We are certainly looking for the profits that are being generated right now from that product," Sunday's lawyer, Marcia Cohen, told the Times. "If Ms. Lohan and Ms. Simon and their companies and their shareholders are profiting from the theft of my client's formula and are profiting from that product, my client is entitled to those proceeds."

Lohan's publicist could not be reached by the Times.

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