Perhaps it's very individual for kitties how the skin shrinks, or what you should call it. Just like with us people. For example, if someone loses 100 pounds, their skin might become saggy and stuff. Some people never have that problem. Just my thoughts, don't quote me on them..
Peter: Oh my god, Brian, there's a message in my Alphabits. It says, 'Oooooo.'
Brian: Peter, those are Cheerios.