The latest trend in social media ‘selfies' is the "bikini bridge."

You know when some girls wear a bikini swimsuit, how her bottoms seem to hit her two protruding hip bones, creating a little bit of space between her tummy and the top of her swimsuit?

Apparently that's the ideal look for women, and those who have it, are hitting their Twitter, Instagram, Tumblr and Facebook profiles to show it off.

The benefit of the bikini bridge, some say, is that it gives you a smoother tan line - but it's mostly just a way to show off how thin you are.