UPDATE: Katy Perry's celebrity guest-packed video for "Swish Swish" is finally in the basket! Watch up top.

The video, which is filmed in the style of a late '70s/early '80s sports comedy (and also feels a bit like Vince Vaughn's 200 flick DodgeBall: A True Underdog Story), features a string of random guests stars from across television, sports and the web, from NBA MVP Bill Walton and NFL vet Rich Eisen to Game of Thrones Hafþór Júlíus Björnsson (The Mountain).

And, naturally, Nicki Minaj stops by for a fierce intermission performance.

ORIGINAL (AUGUST 21): Katy Perry is getting ready to roar like a tiger in the new trailer for her "Swish Swish" music video. Not unlike Taylor Swift's "Bad Blood," another track that fans assume is about the two pop stars' infamous and ongoing spat, the video sets up the plot as a fight between two teams. Katy's, fittingly, is set up as a basketball game with a whole host of unexpected characters. The billing: "the hottest mess in history."

Opening credits feature the coaches of the two teams — the Sheep and the Tigers — Molly Shannon, Terry Crews, respectively. Members of each team include Jenna Ushkowitz (simply noted as "from Glee"), Gaten Matarazzo (from Stranger Things), Christine Sydelko (from The Internet), and of course, Nicki Minaj (as herself). Of course, since no sports game is complete without running narration, commetators Bill Walton and Rich Eisen join the scene. Walton even gets in a line of dialogue, appropriately wondering aloud "Where do they find these people?"

The trailer also promises "many other surprises," so we're guessing ... Bill Nye? Fingers crossed!

Watch the trailer for "Swish Swish" below.

All of Katy Perry's Singles' and Albums' Cover Art:

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