She was the wife of Louis Armand de Bourbon. She was the Princess of Conti by marriage. It was Louise Élisabeth who presented Madame de Pompadour to the court of Louis XV; she also built the Hôtel de Brienne, present seat of the French Ministry of Defence. Louise Élisabeth was the Duchess of Étampes in her own right, having succeeded to the title at the death of her aunt Marie Anne de Bourbon. 