not only the change in her voice, although she has had work out a lot, her body never was the same, and theres no excuses, just look at Madonna... shes better with the past of years. I really thought Britney will take care of her image always, such a pitty...
I think britney is labouring with her partner and nuture and aim her young grown up childs thats why she is diligent.
Right now shes shaving her head in the back of her trailer. Then she's going to go do some coke and not wear underwear for a bit.