Feast your eyes Swifties:
From RuPaul, Ryan Reynolds to Ellen DeGeneres and the entire Fab 5 from Queer Eye, just about everyone is in the video.
But let us take a moment to reflect on the biggest cameo of them ALL:
We knew Katy and Taylor were besties again! We can't stop smiling right now.
Watch the EPIC clip in full here and let us know how many celeb cameos you can spot.
"You Need To Calm Down" serves as the second single off of Taylor's upcoming seventh studio album Lover.