Charlie Needs a Coat

Help. I want to find Charlie a cute coat that will keep him warm and that he can walk in and not pee all over.  Any ideas?  Does anyone out there sew and want to make him a custom coat? He is so barrel chested and has toothpick legs and so all the coats I find look ridiculous on him. Plus he hates them. I want this coat for him, but the sale has ended. I don't know where to find it.