The Z - Z of French female artists

What exactly is it with French female artists with the letter Z at the start of either their surname or in their single name?

I've disqualified Alizée as although she's close, she'd need a touch of Verlan to begin with a Z

Zeuhl is a genre, and Stell Vander's a major figure, but still not quite there.

Also close is Zizou, with a Mogwai soundtrack, but let's be honest, he's a footballeur.

Zaho 

Hindi Zahra 

La Zarra

Zaz

Zazie

Zouzou

But who was first? My money is on French actor and dancer Zizi Jeanmarie...