Replying to Keep jacket or exchange?

Alright I just got my jacket in, its the armada armory in black and I love it. The only problem is, is thats its like 2 inches above my knees. Im talking to someone on backcountry help right now, and I can exchange it for a smaller and since im the skinniest person ever, we think the medium would not but like chest wise. So ns would I look like an idiot, and im also not to good, and im kinda not toward or against the whole "gangsta look", but I feel I cant rock it as im not that good at skiing. Should I keep and say fuck off to the haters or exchange it for something else. No hate. +k for good help thanks.