It originated in the United States on January 5, 2014, created by users of /b/ section on the imageboard 4chan as a parody of popular thinspiration memes. According to a posting on the website, users intended to spread content across social media regarding bikini bridges.
Is the bikini bridge trend real or a hoax?
The troubling part about it is that the ‘bikini bridge’ trend was started as an Internet hoax, but now it’s real. The bikini bridge is a term for the space you get between your bathing suit bottom and your hip bones when you lie down. We guess it’s something to strive for, although we’d rather there not be a space where our crotch is.