The cast of hit US medical drama “Grey’s Anatomy” are reportedly upset that actress Kate Walsh’s character Dr. Addison Montgomery is to get her own spin-off series.

Though news of the spin-off show was released last month, it’s only now that the level of resentment over this decision amongst the rest of the cast has been revealed.

“The rest of the cast seemed instantly resentful of [Walsh],” a source told American magazine Star. “They each thought they’d be the one chosen to get their own show, and now they’re giving Kate the cold shoulder.”

The source went on to add that the actress many people see as the star of the show, Ellen Pompeo, “seemed particularly peeved because she felt that, as the star, she should have been consulted.”