For the unobservant
There are four simple ways for the casual observer to tell Madeline and Monica apart: first, Monica is a head shorter than Madeline; second, Madeline has eyes of a faded green while Monica's eyes are grey; Monica is always seen wearing at least two necklaces and five earrings while Madeline wears less obvious jewelry; fourth, Madeline likes words, while Monica is always watching. Also, they look nothing at all alike.