PRINCE WILLIAM'S PORNO PALACE!

PERVY Prince William’s secret penchant for porn is rocking an already rattled monarchy — and chatter about his horny habit is embarrassing the future king’s cancer-survivor wife, Kate, courtiers confide.

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Stories have recently emerged alleging that the heir to the throne was banned by a video store in Scotland during his days as a college student at St. Andrews University for renting raunchy films and keeping them well beyond their due dates!

“The prince had a very randy disposition when he was at school — and that was apparent in his love of saucy sex comedies!” titters a royal insider.

A source dishes one of William’s favorites was 2002’s Boat Trip, which features busty Swedish pinup Victoria Silvstedt — and the young royal racked up hefty late fees for failing to promptly return the flick!