Celebrity Real Estate's Blonde Bombshells

What do Mischa Barton, Ashley Olsen, Christina Aguilera, Scarlett Johansson and Britney Spears have in common, other than once-upon-a-time blond locks?

Real estate issues.

It seems the troubled real estate market hasn't spared Hollywood. Although a few celebrities have made a profit selling property in the last year, some have taken a hit -- or are poised to -- by listing their homes at a loss. Nicolas Cage aside, many of them happen to be fair-haired ingenues. Which makes us want to ask: Is there a real estate rehab program they can check into?