I've never consciously heard her music. It's likely not to my tastes anyway. So I can't comment on her vocal talents or songwriting ability. Anyway, no here cares about that either...
What is certain to my mind is that she has a much nicer bottom than her once arch rival Britney Shears. Looks like there's even a possibility that she's slightly more sane too.
Christina isn't too shy to let us admire her bottom, so let's take a moment to do that now.