British royal Princess Eugenie reportedly caused outrage at her private school by cavorting around naked and drunk.

The 18-year-old joined pals after a drinking session in “frolicking like nymphs” around the grounds of her exclusive school Marlborough College in Wiltshire.

A fellow pupil tells The Sun, “It’s the talk of the college.  The girls had been drinking, possibly in a local pub, and decided to let their hair down.

"It was a couple of weeks ago just before people started taking their A-levels and some find exams all a bit stressful. For some reason they stripped off and started prancing about.

"It was light-hearted and they were sort of frolicking like nymphs. But they got too noisy and staff discovered them.

"They had to quickly pick up their clothes and hot-foot it inside."

Eugenie and her fellow nymphs were said to have received a “severe telling off and told not to stay at school at weekends” following the episode.