1) Grab shirt that is made of stretchy material.
2) Tell yourself, "Hey! hey there, self! I don't have time to pick out matching pants!"
3) Grasp bottom of shirt...er... "dress"
5) Pull some more.
6) Not that much! People will want to see your ass/vajayjay/underwears.
Thanks to Subway Gal for bringing this to our attention.
Also, I'm in Vegas and I think I saw the fabric used to made Lindsay Lohan's shirtordress in one of the casinos.