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27 June 2012, 10:42 | Updated: 27 June 2012, 11:45
The 'Teenage Dream' star gave a surprise performance after bursting out of a giant bag of pop corn.
Katy Perry launched her 3D concert movie in Hollywood last night (27th June) with a spectacular event complete with a surprise live performance from the 'Teenage Dream' singer.
The 'Firework' star stepped out at the premiere of Part Of Me 3D yesterday at the Grauman Chinese Theatre on Hollywood Boulevard in Los Angeles, dressed in a short red dress and heels, while walking a specially designed pink carpet for the film's launch.
Katy was seen arriving at the star-studded event alongside her 90 year-old grandmother Mary Perry Hudson, who features in several scenes throughout the film.
The premiere was also attended by some of the world's biggest stars right now including Justin Bieber, Selena Gomez and Carly Rae Jepsen.
The 'California Gurls' singer has promised fans the film will reveal intimate details about her personal life, including her separation from husband Russell Brand during the end of her 'California Dreams' world tour at the end of 2011.
Check out a picture of Katy Perry arriving at the film premiere alongside her grandma below (Credit: Getty):
Following the premiere Katy then surprised those in attendance by bursting out of a giant popcorn statue to give a live performance in celebration of the film's launch.
Katy's performance outfit saw her wearing a bra designed in the style of film reels alongside a red and white stripped skirt accessorised with giant pieces of pop corn.
View a picture of Katy Perry performing live at the Hollywood premiere of her film Part Of Me 3D below (Credit: Getty):
Check out Capital's full gallery of Katy Perry's Part Of Me 3D film premiere in Hollywood, California below: