Selena Gomez Two Piece Showoff, Rihanna Hot Bikinis, and Schoolgirl Ariana Grande Highlight the Sextastic Twitpic Roundup

You know that Halloween happens to be just about the biggest holiday of the year for our favorite sextastic celebrities. Are you kidding? An actual legit reason to get all dolled up in revealing naughty costumes? This is the perfect storm for our ego-mad Egotastic! eye candies.

This week's Sextastic Twitpic Roundup includes a number of hot Rihanna bikini pictures, Ariana Grande as a tantalizing schoolgirl, Selena Gomez in her zebra bikini, Kendall Jenner in multiple pose-downs, Ashley Sky and her killer bikini body, Kelly Brook cleavy and fake blood, Vanessa Hudgens and Stella Hudgens sisterly show off for Halloween, Paris Hilton costume party selfies, and much much more. You owe it to All Hallowed Saints to check out each and every one of these hot sextastic social media candids. Enjoy.