RadarOnline.com can reveal Katy Perry is brushing off mockery from her ex-fiancé Orlando Bloom and actress Rachel Lynn Matthews , telling friends she "doesn't care" because she's "too happy" dating former Canadian Prime Minister Justin Trudeau .

The 41-year-old singer became the target of viral ridicule after Bloom, 48, was photographed at a Halloween party with Matthews, 32, who dressed up as Perry in a blue catsuit identical to the one the star wore for her Blue Origin space flight earlier this year. Article continues below advertisement

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Matthews completed the look with a black wig and a staged photo of her

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