Who Is Katy Perry's Secret Super Bowl Guest? Vote!

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Super Bowl Halftime performer Katy Perry speaks onstage during the Pepsi Super Bowl XLIX Halftime Show Press Conference on Jan. 29, 2015 in Phoenix, Arizona. 

Katy Perry still has a few tricks up her multi-colored sleeve.

At a press conference Thursday afternoon (Jan. 29), Perry promised sharks and lions at her Super Bowl halftime show. But more exciting than apparently getting real-life beasts to "Roar" with her is her promise that besides the already-announced Lenny Kravitz, another special guest will join her during the show. Perry teased that the person is a woman and the choice is also "a throwback."

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Who could it be? Read five of our best/most hopeful guesses below, and then vote in our poll of who you hope to see join Perry in Arizona. 

Stevie Nicks
The Fleetwood Mac singer, who recently dedicated a performance of "Landslide" to Perry, has said, "I like Katy's songs and her energy. I dance to them and I treadmill to them. Anybody who makes my treadmill list is my friend... I think Katy's really fun, funny and quirky."

Joan Jett
Right when Perry was starting out, she was already open about her admiration for Jett. "I'm not a puppet, I don't need strings," she once told Billboard. "There needs to be pop girls who other girls can aspire to, like Cyndi Lauper, Joan Jett, Pat Benatar. We need those women again." 

Cyndi Lauper
Speaking of pop stars girls can aspire to, just close your eyes and imagine for a second "California Gurls Just Wanna Have Fun." Picturing it? It's magical and instantly soars to the top of the charts.

Alanis Morissette
It's a bit of a long-shot pick, yes, but in Katy Perry: Part of Me, Perry shared how influenced she is by Morissette's music. Morissette was flattered, responding in the press at the time: "Oh, it's great. I love her. I have actually had the privilege of hanging out with her a little bit." Imagine Perry briefly slowing things down post-"Roar" by singing "You Oughta Know" mashed up with the clearly Alanis-inspired "Thinking of You."

Blondie (Debbie Harry)
Doesn't it seem kind of inevitable that Perry would like to try her hand at a real rocking crowd-pleaser, a la "One Way or Another" or "Rapture"? Bring Harry out onstage with her, and we'll definitely have a moment that'll go down in halftime history. 

Cher
Speaking of halftime history, just imagine if both dark-haired beauties were donning incredible outfits while belting "Believe." We'd want to turn back time over and over again. 

Who do you think will make a surprise appearance?