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Katy Perry celebrates Teenage Dream's birthday
Singer celebrates 1 year since album came out with birthday cake
Katy Perry tweeted a picture of a birthday cake for the first birthday of her smash hit album Teenage Dream.
The star wrote "Happy 1 year birthday to Teenage Dream! We made history, it's been a beautiful year! SO thankful".
By making history, Perry referred to the fact that she's the only other artist to have five number ones from the same album. The other musician to achieve such an accolade was Michael Jackson with "Bad".
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