$100 million - Justin Bieber on an allowance

The 16-year-old singing sensation is worth an estimated $100 million but has a cap placed on his spending and is forced to go without if he reaches the top of his budget too soon.He admitted: 'My money is being invested. I only have a credit card, which allows me to spend a certain amount of money every month. If I reach the limit after the first week, I won't be able to buy any more stuff