Their friendship began during Miley's Disney days — when Katy released "I Kissed a Girl."
And apparently Katy, during a radio interview, admitted that "I Kissed a Girl" WAS ABOUT MILEY.
Miley even said Katy Perry invited her to the VMAs that year!
But before you get too excited, you should know Miley's not the first person Katy has said the song's about.
SOMEONE BETTER TELL ME IF IT'S ABOUT MILEY, SCARLETT, BOTH, OR NEITHER.