The song's music video was filmed in May 2011. Perry created for the clip a nerdy 13-year-old alter-ego named Kathy Beth Terry, who is fond of astronomy and '90s teenage heartthrobs. Viral star Rebecca Black, whose hit single was titled "Friday
" makes a cameo appearance in the video. Other well-known faces you may spot in the Marc Klasfeld directed clip include Glee
stars Darren Criss and Kevin McHale whilst '80s songstress Debbie Gibson and actor Corey Feldmen play Kathy's parents. Hanson and saxophonist Kenny G provide the party's live entertainment.
Debbie Gibson's character's first name in the video is Tiffany - kids, if you don't get why, ask your parents!
The video was shot at Dukes of Hazzard
actor John Schneider's house.