This made me laugh so hard... one of bandit's first sweatshirt's had the same issue and I didn't realize it. He had peed up his sweatshirt and after he peed I went to pick him up and the pee poured out all over me
Look for coats with straps on the bottom. I'll look and see which one Bandit has now, (he's just under 5 pounds and skinny) and it works perfectly.