Katy Perry's makeup line is no "Teenage Dream" -- it's a straight ripoff of cosmetic company Hard Candy ... according to Hard Candy, anyway.
The company is suing Procter & Gamble -- the parent company of CoverGirl -- over its KP line of lipsticks, mascaras and other face paints ... which launched earlier this year. According to the docs, obtained by TMZ, Hard Candy says it's had trademarks for 10 plus years ... and the Katy line is infringing.
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