Queen Consort Camilla is allegedly determined to make Kate Middleton's life a "nightmare."

A palace insider disclosed this information to Radar and Ok Magazine.

The rift between Camilla and Princess Diana worsened after King Charles ascended to the throne.

Camilla reportedly asks Kate to curtsy for her to show superiority.

Kate and William are taking an active role in King Charles' coronation in May.

Camilla is furious at the idea and fears Kate will steal her thunder.

The insider claims that Camilla can't stop gloating.

The rift between Camilla and Kate is reportedly getting worse.

The insider implies that Camilla is jealous of Kate's popularity and position within the royal family.