Katy Perry’s 30 Greatest Moments!

Billboard is taking a look back at the “California Gurl’s” 30 greatest moments! From her very first album ever all the way to her most recent happenings, click through the gallery to see Katy’s wild ride!

Katy Perry arrives at the premiere of "Katy Perry: Part Of Me" held at Grauman's Chinese Theatre on June 26, 2012 in Hollywood, Calif.

katy perry katy hudson

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katy perry hurley show

madonna - ur so gay song

katy perry and snoop dog

Katy Perry seasame street

katy perry on snl

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katy perry

katy perry and mo from the simpsons

katy perry teenage dream

katy perry - last friday night

katy perry

katy perry part of me

katy perry and john mayer

katy perry in 2012

katy perry prism album

katy perry and john mayer

Katy Perry -- 2014 BBMAs

Katy Perry and Ferras performing

katy perry pizza

Katy Perry & Riff Raff get MTV VMA Style Inspo from Britney & Justin!

Katy Perry -- Dark Horse Video

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Katy Perry performs onstage during "The Prismatic World Tour"