Teen pop singer, Justin Bieber, 17, filmed a public service announcement in Los Angeles, California this week. During a break, when an assistant was fixing an item attached to him, Bieber lifted up his shirt, which revealed some of his purple Sesame Street underwear (how many times do I have to tell you - boy, pull up your pants). However, Bieber was wearing something under his shirt that looked like Spanx (LOL). What was that, Manx? Or since you're 17, Banx?