In May 2005, Theron signed a 14-month deal with the watchmaker, promising that, between October 2005 and December 2006, her wrist would be the sole provenance of Raymond Weil, according to the court papers.

That deal allowed Weil to use Theron's photographs in its advertisements in exchange for "substantial funds," the court papers said.

Per the suit, the contract made clear that the 31-year-old "Monster" star could choose her own earrings, necklaces and other jewelry for public events, but Theron agreed to only wear watches made by Weil.

"Additionally, artist hereby agrees that during the term she shall not endorse or advertise watches or other jewelry for any other person, entity or company," the lawsuit quotes the contract. "Furthermore, artist agrees that she will not endorse or advertise watches or jewelry for any other person, entity or company, including for charity."

At a March 2006 press conference in Texas, however, Theron was photographed wearing a timepiece from the Dior line, a picture that subsequently appeared in the watch trade publication Tourneau Times under the headline "The Watches Your Favorite Celebs Are Wearing," with the caption "Charlize Theron wears Dior." A photo of the infraction was provided as evidence.

While Raymond Weil has not specified how much financial compensation it is seeking from Theron, it has asked for damages, repayment of salary for her ad campaign and the fees she pocketed for wearing their competitors' charms.

Theron won a best actress Oscar for 2003's "Monster." Her films also include "North Country," "Mighty Joe Young" and "The Legend of Bagger Vance."