Kate & William Split!

World Exclusive: Heartbroken duchess takes kids & moves in with her mom over William cheating scandal

Heartbroken, humiliated and stressed to the max, Prince William’s wife, Kate, has taken her three children and moved out over the cheating scandal linking her hubby and her sexy former best friend, Rose Hanbury, palace insiders say.

The rail-thin, five-foot-nine, 130-pound beauty is so shattered over the rumored betrayal, she forced William to accept a trial separation, even as their lawyers talk divorce.

Kate and her royal heirs — George, 5, Charlotte, 4, and year old Louis — have secretly left the family country home, Anmer Hall, in Norfolk and settled in with her common-born parents, Carole and Michael Middleton, in Berkshire, according to royal spies. The kids’ great-granny Queen Elizabeth is said to be livid over the turn of events.

“Her Majesty is furious things got so out of hand,” a palace courtier tells GLOBE. “She expects Kate to have more sense. Little George is going to be king. There is simply no way the royal family can allow him to be raised by commoners.

“She has ordered William to settle things with his wife. But Kate won’t see him — and is refusing to speak with him. Elizabeth fears this crisis could destroy the monarchy.”

Not surprisingly, the 37-year old duchess’ archrival, Camilla, is trying to capitalize on her step daughter-in-law’s pain.