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And we're not the only ones! Katy Perry stopped by SiriusXM's Hits 1 to chat about the duet with John and that adorable "love giggle." She also talked about her pal Lady Gaga and how Madonna actually had a huge impact on her career. Check out the video above for all the details and Katy being her adorable self.
Do you like her song with John? What about "Roar"? Personally I've had them both on repeat but tell us what you think in the comments below or on Twitter @OKMagazine.
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