Kate Upton Boob Grab and Kendall Jenner, Ireland Baldwin, Michelle Jenneke, and Bar Refaeli in Bikinis for the Sextastic Twitpic Roundup

Well bless us and the middle of summer weather for providing a plethora of two-piece wonderments in this week's Sextastic Twitpic Roundup. Even the celebrities who want to hide behind a little bit of clothing are not given the chance to do so during July, so they work their tails off (literally) to craft their bodies into fine bikini showpieces for the middle of summer. Anybody who thinks these girls aren't sweating up a storm to get these bodies is fooling themselves; being young and rich and famous and hot isn't as easy as it seems. Albeit I say that being none of those.

This week's Roundup includes Ireland Baldwin bikini posing, Christina Milian in her curvaceous two piece, Vanessa Hudgens and Ashley Benson posing their rears for the camera, Rita Ora showing deep cleavage, Australian track sensation Michelle Jenneke in a show-off bikini, Rosa Acosta booty muy mucho, Kendall Jenner stepping up her game, and much much more. You owe to the brave men and women of the Jaeger program to scope out each and every one of these delicious selfies. Enjoy.