LORELAI: And uh, you’ll need shoes, hose, gloves, some mice, a dog, a pumpkin.
Lorelai is referencing Cinderella, previously discussed. Cinderella’s fairy godmother turned a pumpkin into a coach, and a dog and some mice into attendants so that she could go to the ball in style.
It’s interesting that the last time Lorelai compared Rory’s situation to Cinderella was for her sixteenth birthday party, organised by Emily. This is another formal, dressy occasion they are going to for Emily’s sake, where Rory will be primped and put on display for Hartford society. For both events, Lorelai did her best to help Rory, even though she didn’t fully approve.
Lorelai is casting herself in the role of the fairy godmother, who is going to help Rory transform into a fairy tale princess for one night.
The Annotated Gilmore Girls 