Credit: Joe Pugliese/Bravo

Time for a reality check?

Several stars of the Real Housewives of New York City will soon be axed, Us Weekly has learned.

On the chopping block: Cindy Barshop, Kelly Killoren Bensimon, Alex McCord and Jill Zarin. ("They are sick of her being a diva," a source explains of Zarin, 47.)

The Huffington Post reports that Zarin, Bensimon, 43, McCord, 37 were notified by Bravo on Thursday morning that they would not be part of the full-time cast next season.

With that group gone, only LuAnn de Lesseps, Ramona Singer and Sonja Morgan will remain in the core cast, with additional new castmates to be determined.

Singer, meanwhile, is negotiating a new contract, but another source says, "If they can't agree, she will be off the show as well."

According to a Housewives insider, Singer, 54, is even calling cast members from the franchise to fish for salary info.

No official announcement has come from Bravo, but when it does, pinot grigio will surely be required!