2. Britney Spears – 2001 vs. 2009
Okay, so you had tight abs and a perfectly toned physique in 2001 (when you were 20). So you’ve had a couple of kids and a mental breakdown or two during the intervening decade, but don’t you know that’s no excuse at all and that everyone still wants you to look as slim and fit today as you did in your younger years. Hop to it; run to the fountain of youth, grab some miracle diet pills, become a Scientologist or do whatever else it is that Hollywood types do to worship at the alter of eternal youth once more. Chop chop.