Miley Cyrus kisses Katy Perry! [PHOTO]: Twerker 'kissed a girl and liked it' during Bangerz Tour 'Adore You' performance, John Mayer's girlfriend approves on Twitter [VIDEO]

Miley Cyrus' Bangerz tour is completely insane!

The infamous twerker continues baring her booty and eating fans' undies onstage. And during a recent concert in Los Angeles, the 21-year-old songstress even locked lips with Katy Perry!

Don't believe it?

(Instagram).

Yup, that really happened during Saturday evening's performance of "Adore You" (Feb. 22).

After the epic smooch, Cyrus yelled to the audience, "I just kissed a girl and I really liked it a lot."

And the crowd went insane.

The "Dark Horse" beauty appeared shocked at first, but she didn't seem to mind the girl-on-girl action - later tweeting:

@katyperry: "And after! I adore you @MileyCyrus."

Wonder if boyfriend John Mayer approves?