After the War, throughout France, women accused of collaboration were shaved bald. In many of the ca. 20,000 cases, the women in question had only performed professional services for the occupying Germans, rather than being engaged in sexual relationships with them.
"Collaboration horizontale" is believed to have produced 200,000 French babies with German fathers. Since 2009, Germany offers these children of "the other bank of the Rhine" citizenship, after French foreign minister Bernard Kouchner had lobbied for their recognition.
In Hiroshima mon amour, the (unnamed) female protagonist is revealed to have been shaven as punishment for collaboration horizontale. This phenomenon has also inspired the 2010 film Collaboration horizontale.