The Affair of the Diamond Necklace was a messy scandal in the 1780s at the court of Louis XVI of France involving his queen Marie Antoinette. It concerned an unsavoury episode in which the wife of Louis XVI, Marie Antoinette, whose reputation was already tarnished by gossip and scandal, was implicated in a crime by contemporary public opinion. The Affair was historically significant as one of the events that led to the French populace's disillusionment with the monarchy, making the Queen even more a liability to her husband. Like the Rasputin scandal before the Russian Revolution this very affaire was a sign, not a cause for the revolution but undermined the Queen or Empress and by that the whole monarchy.
So, this is quite serious stuff. This movie is loosely based on that story.
Writer/director/producer Charles Shyer is known for his lightweight comedies as "Baby Boom" (1987) and "Father of the Bride" (1991), he ventured now into a lavish period piece, shot in Prague on a modest $30 million budget. But I feel he should have sticked to the comedies.
It is indisputable is that the film looks gorgeous, with magnificent sets and costumes and providing the film with its only highlight.
But already the music does not match (why not French music, but German?). The story is neither told coherent or with great knowledge. It is seems that he tells it as it were a political scandal involving sex, money and power in Washington.
That applies as well to the lead actress, Oscar winning Hilary Swank. She does look tremendous, otherwise she struggles. But good looks alone do not carry any movie and especially not a long one.
This is a movie without any feeling or knowledge about the time and importance. It will not bore you to death, but it will leave no impression for you. It is one of these movies when shown on TV you would not mind the commercial breaks.