The Minnie Mouse hat is full of history!
In 1929 Mickey announced to the world that Minne was his girl.
Like any good *ahem* mouse, he did it through song.
During Mickey's Follies he addresses an audience and says he's "Got a sweetie" who is "Neither fat nor skinny.
she's my little Minnie Mouse".
Finally!
The world knows they are an official couple.

---