Miranda Kerr Bikini, Kendall Jenner Booty, and Hayley Roberts Crack Flash Highlight This Week’s Sextastic Twitpic Roundup

At some point, we will address the fact that more and more of our favorite self-published celebrity hottie pics are appearing on Instagram over Twitter, giving these corporate giants their due, but, for now, we're still calling this weekly roundup of the best of the celebrity self-awesome visuals the Sextastic Twitpic Roundup. What's in a name after all, especially when compared to what's in a bikini or less?

This week's Roundup includes Kendall Jenner getting extra credit for her home schooling How to Twitpic class with some boot-tay action, the uber-sextastic Miranda Kerr flashing her red hot bikini body on vacation, a very healthy Hayley Roberts pulling down her bikini bottoms for fun time show, Ariana Grande flashing some cute young gams, and much much more. You owe it to the girl you will ultimately let-down on Valentine's Day to check out each and every one of these self-produced wonderments. Enjoy.