When most people think of bank robbers, their minds wander to people in ski-masks who carry big guns.

But in Newport Beach, the most recent bank heist was pulled off by a clean-cut man who was sporting Prada sunglasses.  (If he can afford Prada, maybe he doesn't need to rob a bank... or maybe this isn't his first heist.) Authorities also say he didn't appear to have any sort of weapons with him when he decided to hold the Wells Fargo branch up.

The story goes something like this.  The mid 20-something walked in to the bank, cased the joint, turned …