1920s monokini (topless swimsuit)

I thought the topless swimsuit was invented by Rudi Gernreich in the 1960s, but apparently a slightly baggier version was around in the 1920s! This monokini was worn by Guna Mori, a Follies Bergere girl. Apologies for the size of the photo, I couldn’t find a higher-res photo! Which version do you prefer this one, or the 1960s version?

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