Forever21 jumper navy blue stripes; button straps

NEVER WORN- like brand new- Long pants with low cut back, adjustable/ changeable straps, zipper up the center back (crotch to hem) it is lightweight and very comfortable. Can be worn casual everyday or for a night out! Very cute but didn’t fit me proportionally. Small discoloration on side (see in pictures)- may wash out since never worn and unsure what it is- size M