Back in the day, bikini models had to score a magazine cover if they wanted to get famous. Now, all they need is a smartphone, an Instagram handle, and some really, really high-cut swimsuit bottoms.

These 23 top bikini models have built brands and massive social media followings (we're talking millions) on their smoking hot bodies — and we're only a little bit jealous. So if you're looking for a little fitspiration — aren't we all? — look no further than these Instagram models' jaw-dropping bikini pics.

Click through to see the 23 hottest bikini babes on Instagram.

Image via Getty

Instagram: @sommerray
Followers: 12.2 million

We think this selfie-made Instagram model has a favorite side, and it's not her front.

Image via Instagram

Instagram: : @jenselter
Followers: 10.5 million

This personal trainer is so Instagram-famous for her bikini bod that she and her "glorious glutes" have been profiled in Vanity Fair.

Image via Instagram

Instagram: : @emrata
Followers: 10.5 million

The model-actress is a social media superstar with a world-class bikini bod.

Image via Instagram

Instagram: : @sophiamiacova
Followers: 2.5 million

Swimsuit model Miacova is also a vegan food vlogger and clothing designer -- she created her own collection for Love Culture.

Image via Instagram