Skimpy Bikinis with bold designs were a feature of many of Harry Bush's stylish drawings in the 60's. The mini bikini above attributes the style to London fashion - this was the 'swinging sixties', but I doubt that you'd see clothes like this (or men like this!) on any British beach in that era.
Bush - Tigers
Bush's pictures show them being worn by a handsome, young adonis who wants to show off his assets and torment and exploit older men, less gifted by nature, who happened to pass by.
Bush - Surfer and VW(left), Malibu or Bust (right)
I always assumed there was a lot of artistic licence in the flamboyant designs especially the polka dots used to stunning effect on these passing motorists, surely no-one wore these!
However, I recently discovered. this interesting photo showing two guys wearing side-knotted polka dot bikinis. It's from the 50's according to the title, quite daring I would have thought for that time. Two on the same beach seems quite a coincidence, perhaps this was Life imitating Art, two Harry Bush fans paying tribute. Who knows?