A very cute costume.  A medium will fit someone under 5"4' and weighing less than 150 lbs. If you have real large arms you will have a problem with the sleeves.  The same goes for the boot covers. The S emblem is very nice...the skirt length is a tad bit shorter than I would like, but not so short that your butt is hanging out all over the place.  I will wear shorts underneath...just in case a gust of wind blows... because the skirt is made from a flimsy shiny material.