Someone that is fashionably dressed but smells bad. Someone that wears the latest fashions but forgot about the hygiene clean.
Rick: Wow, did you see Erin's butt in that new skirt she has on today.
Bob: Yah, Just hope the wind doesn't shift while you're checkin her out. Fatal Fashion is her ammo.
Christina: Like that outfit the Peggy is wearing today.
Beth: That chick stinks, she is the epitome of a Fatal Fashion bomb.