Tianna Gregory in A Bikini

Tianna Gregory is a not super great looking fitness model with artificially accentuated curves whose just busted past thee million Instagram followers. By standard rules of commercial exploitation, that means Gregory scores three grand per sponsored post. She's not filling inventory at Kardashian rates, but you book one a week and you've got yourself $150,000 a year supplementary income from showing off your ass on social media.

Beach chicks with tight racks have always done well for themselves. Now there's a way to estimate how well. This doesn't include off-strip Vegas club appearances, import car mod shows, and banging married dentists who pony up for sweet condos. High end implants and skin and hair treatments will run you about ten percent the cost of a four-year college education. You don't even have to take your clothes off. This can't be explained by evolution because we're going backward.

_{Photo Credit: Martin Murillo}