According to The Sun, Avril Lavigne has little or no sympathy for Britney Spears, given her recent troubles. Lavigne is quoted as saying: "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 pressures, the paparazzi, the madness because that's the job."
To be fair, though, Britney really is one of the most famous people in the western world at the present time. It's got to be a bit of a headfuck.