My original tumblr post here. This image was researched by Bacchus at ErosBlog as part of the “Δ commission.” The research was originally published at Hedonix as “Δ 026 – Fashionable Space Helmet. Here is what Bacchus found.
This photograph appeared in L’Officiel de la Couture et de la Mode de Paris, a French fashion magazine that has been published since 1921 and still exists both in print and on the web. What looks to be a complete web archive of the magazine may be found here.
The photograph appeared on page 84 of issue number 573-574 in 1969. A single word (perhaps Guégan) appears upper left, potentially both a name and a photographer credit.
In 2012 a design blog posted a thumbnail crop of this image as part of a photomosiac titled Space Mod: A Voyage Into 60s Intergalactic Fashion. The mosaic includes numerous similar fashion images evoking whimsical space clothing and gear.
The issue of L’Officiel where this photo appeared is quite remarkably space-happy for a fashion magazine, even in 1969, featuring as it does transparent bubbles invoking space helmets on at least half a dozen pages, plus the cover, which is shown here: