Born in 1906 in St. Louis, Missouri, United States. Became a very popular performer in musical revues on Broadway in 1924. Moved to Paris, France in 1925 to appear in the musical revue La Revue Negre. Became a citizen of France in 1937.

Very well known for her energetic dancing and scantily clad risqué musical performances. Was one of the most well-known stars in all of Europe, Volunteered for the French Red Cross at the outbreak of the war between France and Germany in 1940. Was recruited by French Chief of Counterespionage Jacques Abtey to serve as a secret informer.

After the fall of France, Baker served as a member of the French Resistance. Relayed information to the French Resistance (as well as to British and U.S. agents) that she gleaned from conversations she overheard between German officers attending her performances. Also exposed French officials working for the Germans. Also smuggled secret documents written in invisible ink on her musical sheets. Was rewarded for her actions by the French government when she was awarded the Croix de Guerre and the Medal of Resistance in 1945 and was acknowledged by U.S. General George S. Patton for her valiant efforts.

Died in Paris in 1975.