Beyonce
Beyonce has been in the business longer than most of us have done any single thing in our lives. So, naturally, it makes sense that she has some outlandish requests from time to time. First off, Beyonce is in a contract with Pepsi, so if she gets caught drinking anything other than a Pepsi product, she'll be expecting a series of unpleasant emails from her sponsors. So, no Coca-Cola products can be present in any of Beyonce's green rooms.