Organisers of a Marilyn Monroe exhibition are being sued over claims that some of the memorabilia had no connection to the late Hollywood star.
Marilyn Monroe would have celebrated her 80th birthday on Thursday
Lawyer George Braunstein filed the case on behalf of Ernest Cunningham and Emily Sadjady, who visited the show on the Queen Mary ship in California.
The display features items billed as belonging to Monroe, who would have been 80 today, including a red dress.
A spokeswoman for the Queen Mary was not available for comment.
"The Queen Mary should have done a little more homework," said Mr Braunstein.
The ship is docked in Long Beach and the exhibition, which charges $22.95 (£11.79), has been running for six months.
Mr Cunningham is author of the book The Ultimate Marilyn.
The case, filed in Los Angeles Superior Court, claims Monroe had nothing to do with many of the items and some were made following her death from an overdose of sleeping pills in August 1962.
It asks the exhibitors to refund admission fees and also seeks unspecified damages.
The exhibition opened on the ship after the Hollywood Museum cancelled a scheduled show over questions concerning authenticity.
The owner of the memorabilia, Robert W Otto, has previously insisted the items are authentic.
Monroe's image is now worth an estimated £5m a year.