It seems as though Gyuri has the rectangular shaped face, or so it seems. In this photo she pretty much leaves out the fringes, to create a wavy long hairstyle.
Gyuri's hair is not too puffy, or not too light in volume. Her haircuts change from long to medium. She definitely had a perm for the ends of her hair to create that "wavy" look. She is obviously gorgeous! You do the evaluation :)
Yes! Gyuri does not abuse the law of fringes; she tends to avoid fringes at all times, by observing her images.
In a fashionable sense, one could describe Gyuri Park to have that "Goddess" look.