Canadian actress Suzanne Garceau in the Canadian children TV-show MINUTE MOUMOUTE. In the episode from the 23rd of December 1975 she wears blue jeans, a striped blouse and a dark blue vest, maybe a denim vest, but I'm not sure about that.
https://www.facebook.com/RadioCanadaArchives/videos/811055759280492/
French singer Dalida with partner at the airport. She had worn denim vests lot of times before, but I've never seen her with this special outfit. Denim on denim from the 70s. Found in the WWW
This picture is part of an early collection of denim and jeans clothes displayed in the French Elle magazine in 1971.
https://www.featherstonevintage.com/blogs/archives/neuf-facons-neuves-de-vivre-jean
French music group PARADISE on the cover of their 1977 Long Play Vinyl Album and Single. One female member wears a blue jean vest and denim on denim. Found in the WWW.
French actress Annie Girardot wears a blue jean vest in the 1974 French movie LA GIFLE.
French actress and model Lisa Stophenberg appeared in some special kind of movies and magazines in the second half of the 1970s. These caps are from a 1977 French movie with Lisa wearing a cute denim on denim outfit with blue jeans and denim vest. Found in the VEF
Not from the movie, but from Lisa too:
