Jcrew black lace halter tank and pants

Jcrew black lace set Top halter tank with tie around neck for the back Top size 2 Bottom stretchy waist band, pockets, crop length Bottom size 0 Overall still in stunning condition! Only thing I have noticed is that the bottom of the pants some of the string does appear to be a little frayed. Not sure if that’s the style or if that happened when washed