Not many people can pull off work-out shorts with knee-high socks, but Jessica Simpson seems to look quite good in this outfit.

She arrived at her personal trainer’s gym to tone up and shape up. By the look of the running shoes she has on, it looks like they might all go out for a jog.

Also, I personally prefer the blonde Jessica over the brunette one. Simpson says that the change in hair color is for a new role, but others speculate that it has more to do with her split from former boyfriend John Mayer.

What do you think? Blonde or brunette?