Vanity Fair is a 2004 historical drama film directed by Mira Nair and adapted from William Makepeace Thackeray's 1848 novel of the same name. The novel has been the subject of numerous television and film adaptations. Nair's version made notable changes in the development of main character Becky Sharp, played by Reese Witherspoon.

Rebecca "Becky" Sharp, later describing herself as Rebecca, Lady Crawley, is the main protagonist of William Makepeace Thackeray's 1847–48 novel Vanity Fair. She is presented as a cynical social climber who uses her charms to fascinate and seduce upper-class men. This is in contrast with the clinging, dependent Amelia Sedley, her friend from school. Becky then uses Amelia as a stepping stone to gain social position. Sharp functions as a picara—a picaresque heroine—by being a social outsider who is able to expose the manners of the gentry to ridicule.