The best sweater

It's one little mouse's birthday and he is very excited to open his presents! He gets a lot of great gifts, but his favorite is the sweater his grandma made him. He loves it so much that he wears it all the time! But as he grows bigger and bigger, Grandma realizes she must find a different use for the sweater, so she makes him a new, big sweater he can grow into and turns his old one into a toy rabbit.