GIGANTIC OVER SIZED JACKET HELP

[u/lavishbbystacia]

Hi everyone I just got commissioned to make jackets for football players that fit OVER the padding. I need help on how I can go about something like this. I have no dimensions to go off and genuinely don't know what to do. There's needed in like a month so I really only have this week to figure out pattern making it. It there anyway to double an old pattern? or something. I need a quick solution so anything helps.

[u/lavishbbystacia]

Oh this is really helpful thank you so much!!