8. Rihanna
Rihanna is a celebrity known pushing the envelope from time to time. The multi-platinum R&B-pop singer made headlines in 2009 when her then-boyfriend, Chris Brown was arrested for assaulting her. A photo of her injuries was made public and Brown was eviscerated in the media. Fast forward a few years later and the two have apparently reconciled, participating in an on-again off-again relationship that hopefully involves less domestic violence this time around. The Barbadian songstress has made news for various comments and outfits over the years, wearing next to nothing for photo shoots and paparazzi captures, and just being outspoken in general. However, it was back in 2012 when pics surfaced of her allegedly partaking in marijuana usage that the star let us all know how she really felt. MTV posted a tweet that read "Yikes. @Rihanna's marijuana photos from Coachella spark controversy" and then linked to the story on MTV.com. She promptly responded with a tweet of her own, stating: "@MTV Yikes....@rihanna ran out of f*cks to give". Game. Set. Zero F*cks. Match.