I found some lovely advertisements in the French journal Gryphe. The article ("Les Charmes de Suzy") is about how this spokes girl for Calor (Suzy) allowed the company to pioneer advertising in France. Unfortunately, my French isn't good enough to read an academic article, so I can't tell you much more than that, but here are some of the ads they included in the article.
She really is quite charming, isn't she? I couldn't find much more about her or the ads online. If anyone has any more info or know of any more of these ads, please let me know.