Celebs like Madonna, Cindy Crawford, Rihanna and Simon Cowell have all become devotees of one of the hottest new health and beauty trends around…Rihanna even tweeted a shot of herself getting the treatment! You might ask, Since when did an IV drip become a health and beauty tool? I know I did. Actually, the concept isn’t new: It was created by a medical doctor and has long been offered by holistic practitioners.