Piaf's career and fame gained momentum during the German occupation of France in World War II.And the Show Went On: Cultural Life in Nazi-occupied Paris, Alan Riding Knopf Doubleday Publishing Group, 19 October 2010. She began forming friendships with prominent people, such as actor and singer Maurice Chevalier and poet Jacques Bourgeat. Piaf also performed in various nightclubs and brothels, which flourished between 1940 and 1945.Véronique Willemin, La Mondaine, histoire et archives de la Police des Mœurs, hoëbeke, 2009, . Various top Paris brothels, including Le Chabanais, Le Sphinx, One Two Two, La rue des Moulins, and Chez Marguerite, were reserved for German officers and collaborating Frenchmen."Die Schließung der 'Maisons closes' lag im Zug der Zeit", Frankfurter Allgemeine Zeitung, 15 October 1996. Piaf was invited to take part in a concert tour to Berlin, sponsored by the German officials, together with artists such as Loulou Gasté, Raymond Souplex, Viviane Romance and Albert Préjean.Sous l'œil de l'Occupant, la France vue par l'Allemagne, 1940–1944. Éditions Armand Colin, Paris 2010, . In 1942, she was able to afford a luxury flat in a house in the upmarket 16th arrondissement of Paris area. She lived above the L'Étoile de Kléber, a famous nightclub and bordello close to the Paris Gestapo headquarters.Robert Belleret: Piaf, un myth français. Verlag Fayard, Paris 2013.
Piaf's career and fame gained momentum during the German occupation of France in World War II.And the Show Went On: Cultural Life in Nazi-occupied Paris, Alan Riding Knopf Doubleday Publishing Group, 19 October 2010. She began forming friendships with prominent people, such as actor and singer Maurice Chevalier and poet Jacques Bourgeat. Piaf also performed in various nightclubs and brothels, which flourished between 1940 and 1945.Véronique Willemin, La Mondaine, histoire et archives de la Police des Mœurs, hoëbeke, 2009, . Various top Paris brothels, including Le Chabanais, Le Sphinx, One Two Two, La rue des Moulins, and Chez Marguerite, were reserved for German officers and collaborating Frenchmen."Die Schließung der 'Maisons closes' lag im Zug der Zeit", Frankfurter Allgemeine Zeitung, 15 October 1996. Piaf was invited to take part in a concert tour to Berlin, sponsored by the German officials, together with artists such as Loulou Gasté, Raymond Souplex, Viviane Romance and Albert Préjean.Sous l'œil de l'Occupant, la France vue par l'Allemagne, 1940–1944. Éditions Armand Colin, Paris 2010, . In 1942, she was able to afford a luxury flat in a house in the upmarket 16th arrondissement of Paris area. She lived above the L'Étoile de Kléber, a famous nightclub and bordello close to the Paris Gestapo headquarters.Robert Belleret: Piaf, un myth français. Verlag Fayard, Paris 2013.