June 18, 2012 - Stephen Lovekin/Getty Images North America more pics like this »
Justin Bieber

Justin Bieber isn't one for controversy, and his celebrity rider is right in line with that reputation (mixed nuts, fruit, and bottled water don't really tip the diva scale). However, Biebz is big into plain white shirts and socks. If you want to book the pop star, you'll need to buy dozens of packages of crew neck and V-neck T-shirts, tank tops, and low-rise socks ranging from size extra small to extra large.