Catfight In The Cards!

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Gwen Stefani’s joy at returning to “The Voice” next year didn’t last long – she’ll be reporting to bitter rival Rihanna!

According to insiders, Rihanna’s appointment as chief advisor to judges Gwen, Blake Shelton, Adam Levine and Pharrell Williams has angered the No Doubt singer.

Despite her publicist’s denial, a source told The National ENQUIRER: “Gwen’s had a grudge against RiRi that goes back years, even though she was the one who started it.”

In 2011, Gwen was asked to define how she’s different from RiRi and she replied: “I usually put pants on.”

The source explained: “Rihanna’s the type to hold a grudge and thought Gwen was way out of line.”

Now the mom of three is having to deal with working under her old enemy.

“Gwen’s convinced Rihanna’s being paid way too much and that she’ll throw herself around on the show and expect to be queen bee,” added the source. “She’s not going to sit back and let that happen.”