For the French general and diplomat, see Claude Carra Saint-Cyr
Claude Saint-Cyr - sometimes Claude St-Cyr or Claude St. Cyr - (ne Simone Naudet, 1911-2002) was a French milliner who worked in both Paris and London between the 1930s and 1960s, also establishing a worldwide reputation for her hats. She collaborated with many leading designers, including Jean Patou and Norman Hartnell.