When she and her family have their royal titles stripped by the crown, 18th-century French countess Jeanne de la Motte Valois (Hilary Swank) schemes with her lover (Simon Baker), her husband (Adrien Brody) and a mysterious Italian count (Christopher Walken) to obtain a diamond necklace worth millions. Joely Richardson co-stars as French queen Marie Antoinette in this period drama that earned an Oscar nod for its lavish costumes.