Shrink a jumper?

I really don't know how to shrink a jumper in this way but years ago I used to sit in a hot bath with shrink to fit jeans on LOL. I don't know whther this is a possibility with the jumper, I personally would take it back and ge a smaller size myself rather than risk ruining it, but someone else on here I am sure will have some good tips for you. Good luck. Ellie :D

Unless you know how to sew or someone that does i have not any other suggestions except to wash it in cold water to avoid loosing its color,and dry it in the dryer...Cna you return it? if so thats what i would do..

hi, ur experience makes me laugh, it is funny and yeah such embarrassment happens. maybe u can saok it in hot water if it is woollen or cotton one. i had similar trouble like u. my sweater shrinks to a vest.