Paris Jackson Posts Bikini Selfie From Hawaii Vacay

Why? Why??!!

Don't rehabs, treatment centers and therapists tell young people with emotional issues (and older people too, for that matter) to stay off social media and definitely not to post risque photos that expose their bodies to the world and to cruel commenters?

Well Paris Jackson either didn't get that advice during her six-month stint in treatment or she's just decided not to heed the warnings. The 15-year-old posted a sexy selfie on Instagram Thursday, taken during a family trip to Hawaii over the Christmas holiday. And she looks great! But no doubt she'll have to endure haters who decide to post negative things about her. And really, does a young teen need to put herself out there like this ... especially being a famous young teen?

Paris is reportedly back in LA now at her grandmother Katherine Jackson's house after having spent time with her "momma" Debbie Rowe and the rest of the family in Hawaii. Paris also posted a pic of her and some friends who came along on the trip. Looks like she's got great support from family and friends ... hopefully it'll be a positive 2014!