BOUNCER: It’s twelve bucks. And it’s eighteen and over.
SOOKIE: Oh, she’s eighteen.
RORY: That’s right. Last week. So it’s a new eighteen, but it’s eighteen, yup.
BOUNCER: You got some ID?
LORELAI: Hey, uh, sir, make way for Rory. That’s her name. And her only name. Rory. Single name, she’s that important. Internationally known international supermodel and sometimes spokesperson for international products.
An in-joke – Alexis Bledel, who plays Rory, was a model before she began acting on Gilmore Girls. She first modelled for Seventeen magazine, and did have to travel as a model.
In real life, it is extremely unlikely that a bouncer would allow a 16-year-old girl without any identification into a nightclub that is 18+, even when accompanied by her parent; the penalties for doing so in the US can be quite strict. Lorelai’s way of getting people to make new rules for Gilmores is really getting quite unbelievable.
Alexis Bledel was almost 20 in this scene, so in real life actually would have been old enough to get into an eighteen and over nightclub.
The Annotated Gilmore Girls 