We know, we know...she kissed a girl and she liked it...and "the taste of her cherry ChapStick" and that whole thing.
So, here's how it all went down. Katy Perry was sitting front row at Miley Cyrus' concert last night and according to Billboard, Miley asked the audience to make out with each other during "Adore You."
"I don't know if you know this, but tongue is really appreciated at a Miley Cyrus show," she said.
Then, she spotted Katy sitting there and she couldn't resist living out the pop singer's most famous track.
"I just kissed a girl and I really liked it a lot," Miley said. Judging from the video of the singers' smooch, it doesn't look like there was any tongue-- but hey, a kiss is a kiss, right?
Side note: We love how awkward they look as they're approaching each other.
Miley Cyrus Locks Lips With Katy Perry During Concert