By Breaking Celebrity News Staff

Katy Perry, in her performance at Sunday’s 54th annual Grammy Awards from the Staples Center in Los Angeles, might have taken a swipe at her ex-hubby Russell Brand through song.  

Singing her new single Part of Me, Perry -- clad in a sexy, spacesuit-like silver-and-gold ensemble -- belted out lyrics that might, or might not, have referred to her 14-month-long marriage, and subsequent split, from the Get Him To The Greek star.

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Perry -- who left the show empty-handed -- sang lyrics such as,

"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."

In one instance, she reportedly changed a line in the song, from "You can keep the dog from me/I never liked him anyway” to "Keep your diamond ring/In fact, you can keep everything ... except for me."

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The Firework singer, 27, and Brand ,36, reached