I tried to repost this article but it wouldn't work. So, I've linked to the original:
If I had a nickel for every time someone has said I don’t look like a private investigator. . .well, I’d have a lot of nickels. I always reply, “That’s sort of the point, isn’t it?” We’re so used to detective stories having a tough guy in a trench coat, but those guys are easy to spot during a surveillance. When I’m tailing someone, I never worry that they’ll look in their rearview mirror and think, “Oh no, I’m being followed!”—which is exactly what happens if they see Joe Detective behind them. I’ve been very successful in my field, and it has helped that I don’t “look like” a private investigator.
Read the full, and very interesting article here at CRIMEREADS.