Katy Perry to Sing About Russell Brand at Billboard Awards?

Katy Perry to Sing About Russell Brand at Billboard Awards? | Katy Perry

Katy Perry

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Is Katy Perry trying to send a message to Russell Brand?

The singer, whose divorce from Brand is supposed to be finalized next month, is set to sing a revealing breakup song, "Wide Awake" off her latest album, this Sunday at The Billboard Music Awards in Las Vegas, PEOPLE has learned.

"It's obviously about Russell," a source said, though Perry has not publicly confirmed it.

The song speaks about being blinded by love, including the lyrics, "I wish I knew then what I know now wouldn't dive in, wouldn't bow down."

Perry has since moved on from Brand and is seeing Florence and The Machine guitarist Robert Ackroyd.

The Billboard Music Awards air Sunday on ABC.