"Here comes Peter Cottontail-- on a fun fashion pullover":
...And he's brought along two of his best friends...
...And their cottony pompomed bottoms are right there on the back of your sweater!
...For all the world to see (and smirk at when your back is turned)!
This is one of those things that would probably be adorable on a kid, but I don't know if I'd describe it as "fashion".