We told you the other day that Lindsay Lohan would deny stealing the formula for the spray on tan product Sevin Nyne, and she did.

Scientist Jennifer Sunday filed a federal lawsuit against Lohan and her business partner, Lorit Simon, for breach of contract, theft of trade secrets, civil conspiracy, intentional interference with contractual relations and deceptive and unfair trade practices.

Lohan takes credit for co-creating the spray tan mist, named after her lucky numbers, and sold for $35 at Sephora, with Simon, a Las Vegas-based businesswoman.

The lawsuit alleges Simon and Sunday were negotiating over samples of the product, but couldn’t agree on a price.

Sunday’s lawyer, Marcia Cohen, told the St. Petersburg Times yesterday:

"The next thing we know, Lorit Simon and Lindsay Lohan are partnering, and Ms. Lohan is taking credit for developing this formula, which she indeed had no role in."

Taking credit for something she didn’t do, that sounds exactly like Lindsay, who claims the scientist is lying. Lindsay Tweeted:

"No formula was stolen for Sevin Nyne! It’s a woman looking for a payday. That’s it!"

We believe the scientist, not Lindsay who has proven herself to be a habitual liar.

A Florida chemist, Jennifer Sunday, has filed a lawsuit in Tampa federal court claiming that Lindsay 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.

We await a statement from Lohan denying she would ever steal anything, despite her history of stealing. Formulas are like finger prints, some are too complex to be accidentally copied.