Help finding a similar pattern? Sewing Machines Parts and Sales in Los Angeles

I’m not sure if this is okay to post here, but I’m currently making a jacket for a friend and I need help finding the pattern she gave me in a plus size. She purchased Simplicity 2341 in sizes 6-14, not knowing about pattern sizing being different from regular clothes sizing. Is there any way I can find the same or a similar pattern in plus size?