Clark -- a leading member of the team that prosecuted Simpson in 1994 for the killings of his former wife, Nicole Brown Simpson, and her friend, Ron Goldman -- Wednesday sported a new look that made her difficult to recognize in the courtroom, People.com reported.
"Nobody recognized me because they weren't used to looking for a blonde," said Clark, who was sitting a few feet away from Simpson at his arraignment on felony chargers.
The "ET" legal correspondent told People she changed her brunette mane on the advice of her hairdresser.
"I just want to say, the only time I didn't listen to my hairdresser is when I had a perm," she said.
Clark confirmed that blondes do have more fun.
"There's no question they do," she said. "Why didn't someone tell me this sooner? I thought it was cheating, like you had to be naturally blond or something when you were a kid. No, you don't have to be. I love it."