Go here to download Sheila's Christmas performance of 'L'heure de la Sortie'.
According to the Sheila TVgraphie, this is from a program entitled Douce France and was broadcast on December 18, 1966.
The video truly lives up to this blog's name! Sheila, mercifully out of her insane bouffant phase, and her high-booted friends sing and dance in front of Christmas trees and inside what looks like a department store.
Or watch it at Youtube.