There's a new bikini on sale that's designed to look like two HANDS are holding and covering your boobs. The hands are connected with a sheer material, so unless someone gets pretty close, all they would see are the hands.
For what it's worth, the designer made the bikini hands look like women's hands with red painted nails. That's probably a better look than fake man hands. If you want this plastic-looking bikini, it's not cheap, it's on sale for $326.