MIKE WALKER

Mousy Kate Middleton’s Ratf**k Cracks Up The Queen!

Majesty gets a kick out of shrieking Dutchess.

Kate rats NEWED
Getty Images / Corbis

Squealing like she’d just seen a rat or something, Princess of Our Hearts Kate Middleton emitted a piercing shriek that instantly summoned guards at the country estate she shares with hubby Prince William, bonnie Prince George and wee Princess Charlotte!

Reports my royal source, Lord Knows: “As the guards raced toward the family quarters, an agitated servant said Kate had spotted a RAT running through her walk-in closet. They charged in as Kate screamed,‘There’s a rat in my room!’ — and fled. Deploying in a massive search, guards finally found the li’l rascal — a tiny plastic toy rat belonging to toddler Prince George! When the incident was reported to The Queen, Her Majesty started laughing SO bloody hard, we thought she’d cry!”