Who supposedly said Let them eat cake?

This quotation is popularly attributed to Marie Antoinette, the wife of King Louis XVI and the last Queen of France. In response to the news that the French peasants had no bread and were starving, she allegedly said, "let them eat cake."

However, she never actually said that. Even though the quotation is attributed to her, it was actually spoken a century before by Marie-Therese, wife of Louis XIV.