Earliest Zentai Suit Model?

Zentai suits are becoming a kind of costumes for entertainment, fun, for sleepwear, in just recent two decades, and even right now, we can't really say it's very popular, although Lady Gaga's red dress with hood totally covered, did spread the art of zentai suits in fashion world some way, but could you guess when's the earlist zentai suit in media? I don't know either, and there's a photo I found, which is the earlist zentai showing in public, as I know, and it's a promotion poster made for Van Clef & Arpels jewelry, in 60s. The model's in a black full body zentai costume, with the beautiful bodyline best shown, and she's also wearing glorious necklace and wrist lace, and the eye and eyebrow by jewelry too, very charming and artistic, I have to say! Can't believe it's taken so many years ago, how adventurous.

Black Zentai Suit Model for Jewelry, in 1960s