Avril Lavigne has lashed out at Britney Spears, saying that the reason Britney has broken down is because she is too weak for fame. She tells The Sun: What's happened to Britney is all down to who she is as a person. If you want a piece of this business you have to be able to deal with it. You can't complain about the pressures, the paparazzi, the madness because that's the job." Britney could learn a lot from Avril about handling the pressures of fame. Like here when she spit on a paparazzi and her fans while leaving the...