Season 2, Episode 7 of “The Sopranos” is titled “The D Girl”. Near the end of the movie, Christopher calls Alicia Witt’s character Amy “a D Girl”, which is obviously an insult, because she replies “I’m a vice-president!”
D is for development. A development girl is a girl with a really low position in an entertainment company. She says she’s a VP because he basically called her an intern.