On 25 May 1685, at the age of eleven, Louise Françoise was married to Louis de Bourbon, Duke of Bourbon, a distant sixteen-year old cousin of her father. Her husband was the son of Henry Jules, Duke of Enghien, the son of the head of the House of Condé, a cadet branch of the reigning House of Bourbon. His mother was Anne Henriette of Bavaria. Louis XIV gave his daughter a large dowry of one million livres upon her marriage. As she had married a prnce of the blood she thus outranked her sister who at the time was still unmarried. Louise Françoise and her husband eventually had nine children, all of whom survived into adulthood.