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Katy Perry has kept pretty mum about her divorce from Russell Brand, but that all changed on Sunday night at the 54th Annual Grammy Awards. Perry opened her performance by singing some of her hit E.T., leading into her new song Part of Me that seems to have direct reference to her ex.

Perry sang lines like, “You chewed me up and spit me out / Like I was poison in your mouth / You took my light / you drained me down / you ripped me off / your love was cheap.” However, the most obvious reference came when she belted, “Keep your diamond ring / in fact you can keep everything.”

Uh-OH! The claws are out now — what did you think of Katy’s performance and new song?! Let us know below and hit us up on Twitter.