I want to amend my assesment of Autobiography, because "worst" makes it sound bad, but that's compared to pop masterpieces like the first two Spice albums and Stripped. I was actually pleasantly surprised, the way people talk about her like she's a joke. This is one of the cases where it's not deserved at all.
Musically it's closer to fringe pop like Avril or Pink, and she's certainly not as good as either of them, but it's a fun album. I'll defend the bitch's talent any time you like.