Heiress Paris Hilton is being sued by a hair extension company for $35 million, TMZ reports. Hairtech International is suing for fraud and breach of contract.

The company alleges Hilton broke the conditions of her contract to wear and promote their product when she wore a competitor's extensions. Hairtech also alleges that Hilton's partying is contrary to their marketing campaign.

The suit claims Hilton, 29, was "seen in magazines and on television not wearing [their] hair extensions and was in fact wearing competitors' hair extension products."