My immediate thought was that you ask a good knitter to knit you one.
Then I remembered what would have happened if teenaged me had asked my nan. First she'd ring me and say "Barb couldn't find quite that colour wool so she got the next closest thing, is that ok?" Me: "Er, that's great, Nan!"
Result attached. She meant well and I appreciated the effort but I never asked her to make me a jumper I'd seen in a magazine ever again, bless her. 