Unless you've got self confidence in spades, don't try this at home...

What did we do in the days before Instagram? Aside from offering us a space to share our lives in the click of a button, it also allows us to gain a cheeky glimpse into the inner universe of the world's most stunning women. And boy, do they show us a lot! From raunchy naked-on-the-beach pics (artfully done, of course) to portraits that call for a bit of creative nipple coverage - here are just a few of our favourite celebs without inhibitions on Instagram.

In the gallery above, you'll find provocative snaps from the likes of RiRi and Miley, seductive bare-all poses from Victoria's Secret Angels Candice Swanepoel, Elsa Hosk, Stella Maxwell and Romee Strijd, plus some stupidly sexy moments from Aussie girls Catherine McNeil, Nicole Trunfio and Abbey Lee. While it doesn't take a genius to pose for a naughty pic or two, it takes serious guts to post it on Instagram like these babes.        

40 of the naughtiest girls on Instagram