Katy Perry performs live in Brisbane, Australia. (Bradley Kanaris/Getty Images)

Katy Perry, the pop star with more Twitter followers than anyone on Earth, is set to take the halftime stage at the Super Bowl on Sunday. What will she sing? What will she wear? How many people dressed as cats will be involved? Here’s everything that we know so far.

* She’s going to sing all of her popular songs.

Perry told ESPN that she’s “squeezing in as many familiar hits as possible” with a mash-up of songs so that people in the stadium and at home can sing along. So, let’s see, that probably means “Hot n Cold”; “California Gurls”; “Teenage Dream”; “Last Friday Night (T.G.I.F.)”; “Wide Awake”; “Roar”; “Dark Horse.” Can we expect a finale of “Firework”? And given how cautious halftime shows have become, is she allowed to sing “I Kissed a Girl”?

* It’s going to be funny.

“I want to bring the humor, I want to bring the color, I want to bring the sass and I want to bring the incredible joy,” Perry said in an interview with the Daily Mail. “I’m not so serious and there’s going to be a lot of fun, a lot of humor in it.” (Based on Perry’s feline obsession, we’re assuming this means there will be cats.)

* Lenny Kravitz will be there.

Perry teased Kravitz as one of the special guests. Who knows who else will show up? Meanwhile, “American Woman” will probably be on the playlist.

* Kravitz and Perry have been texting each other ideas.

“You might not expect this … the song choice,” Kravitz told E! on the red carpet at the SAG Awards.

* Perry will be on stage for 12 and a half minutes.

“I know the responsibility I’ve been given for 12 and a half minutes,” Perry told the Daily Mail, adding “Sometimes you can’t control other people, but I can control myself.”

* Hmm, so does this mean no unpleasant surprises for NBC, a la M.I.A.’s middle finger? Or that she won’t (as rumors suggest) use the platform to introduce a new song that disses her frenemy Taylor Swift?

We’ll see, but Perry promises to be on her best behavior. “There’s no trying to sabotage myself,” she said. “I have no other motive besides the music and to share the songs that I’ve created over the years.”

* Perry is inspired by a combination of Diana Ross, Madonna and Beyoncé.

Diana Ross dropped the mic and was lifted off the stage via helicopter. Madonna had great graphics. Perry loves all of that, and is similarly inspired by the “fierceness and power and sexiness” of the Beyoncé halftime show. She also plans to borrow the same giant fans that Beyoncé used in 2013 for that perfect windblown look.