Nutrix Slim Keto First get to know your shape. It would not be fair to hide a Slim Body behind a shapeless gown nor would it feel comfortable to squeeze yourself into a tight fitting tunic. A common prom disaster is your gown seam giving up on you during your prom. So make sure you buy the dress to suit your body shape. For those with heavy body types, play your strengths and lay more emphasis on the assets.