A girl version of 'Guido.' Mainly found in New York lands or the Jersey Shore areas. These girls are excessive tanners, usually jet black or dark hair. They have fake boobs that don't fit in their shirts. Also, shirts are short at the stomach for tacky belly button rings to be exposed. Brands like 'Ed Hardy', 'Gucci', and 'Juicy Couture' are of a Guidette's favorites. Not only are these girls skanky, but they are incredibly annoying. With their New York/Jersey (very Italian-cavone accents) they don't keep their mouths shut (and in THAT way, too).
"Hey did you hear that?"
"Oh yeah, that's a guidette that can't keep her mouth shut for a second!"