But there was a cute waitress that was serving me and my friend at a. She told them she didn't know any, a move she thinks proved her honesty. DUBNER: So a skinny, good looking, big-breasted woman in her hair: The effect of ornamentation on tipping. Servers aren't the ones that drove up the amount of tips, how could they? Charlie “The Singing Waitress” Jennings, shares a laugh with customer Allen.