"Starstrukk" is a song recorded by American group 3OH!3. It is their third single and their second single to be released from their second studio album, Want. A radio-only and the deluxe album version has been released featuring pop singer Katy Perry. The version featuring Katy Perry has had considerable success in Australia, Belgium, Finland, Ireland, Poland and the United Kingdom, peaking within the top ten of the charts in all of these countries. It is the follow-up to their debut single "Don't Trust Me".

3OH!3 was among the line-up of the Warped Tour 2008 where they met Katy Perry. The band then toured with her on the UK dates of her Hello Katy Tour in February 2009. They said of Perry's participation to the song: "Katy did this because we toured with Katy, we are good friends with Katy and we worked on the song together — we worked on the remix together."

The music video for the song was premiered by AOL on Monday, June 8, 2009. A "behind the scenes" of the music video has been released prior to the release date. It was filmed in Los Angeles, California and directed by Sum 41's drummer, Steve Jocz. According to Rolling Stone, the video showcases throngs of girls dressed in fluorescent wardrobe chasing 3OH!3, a large clothed orgy with construction workers, a marching band and copious amounts of whipped cream. Jocz said the concept is a bunch of people getting clustered together until the eventually formed a massive dogpile. According to group member, Sean Foreman, "the video is looking awesome."

Sean Foreman commented on the video to an interview with MTV. He said the following:

The second music video for "Starstrukk", which was directed by Marc Klasfeld and Steve Jocz, and includes Katy Perry, was shot at the Los Angeles County Natural History Museum's Rose Garden in Exposition Park on Monday September 21. The story in the video is related to When in Rome with the theme of magical coins thrown into a fountain. The video also references James Bond films, West Side Story and Baywatch.

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