From smoking to nail-biting, the royal family has had their fair share of naughty tendencies that one would assume to be rather unroyal.
While some habits are harder to quit than others, like the late Queen Elizabeth II's daily slice of chocolate cake or Princess Margaret's 60-a-day chain-smoking, several of the royals have adopted a healthier way of life since quitting their unruly routines.
So let's take a look at the 10 naughtiest habits of the royals...
Prince Philip dropped this expletive
© Getty ImagesThe late Prince Philip famously swore at a photographer for taking too long to take a picture in 2015. At an event with the RAF Club marking the 75th anniversary of the Battle of Britain, the Duke dropped the F-bomb when he became impatient with the press line. Whoops!
Prince Louis' amusing expressions
© Getty ImagesThe youngest son of the Prince and Princess of Wales is the most animated royal and has entertained the public over the years. During the late Queen Elizabeth II's Platinum Jubilee, then-four-year-old Prince Louis grew overexcited during the pageant, pulling funny faces and sticking out his tongue at Kate. He even placed his hand over her mouth, prompting Mike Tindall, sitting directly behind them, to playfully gesture that he was keeping an eye on him.
Queen Camilla's pre-marriage habit
© Photo: Getty ImagesQueen Camilla was a smoker for thirty years, though reportedly quit cigarettes for good when she married her husband Charles, who wasn't a fan of the habit. King Charles' official royal website even addresses the fact in a FAQ section. It reads: "The Duchess of Cornwall [now Queen Consort] gave up smoking many years ago."
Queen Elizabeth II's daily chocolate treat
© Photo: Getty ImagesNow, indulging in a sweet treat every day is more a guilty pleasure than a naughty habit, but notable all the same. The late Queen Elizabeth II had a penchant for this particular chocolate biscuit cake that she insisted on eating every day. Former royal chef Darren McGrady previously said: "She is absolutely a chocoholic. Anything we put on the menu that had chocolate on, she would pick off the menu."
Prince William's messy habit
© Photo: Getty ImagesDuring a visit to Cyprus in 2018, the Prince of Wales cracked a joke about one of his household habits which drives his wife Kate mad. While admiring the furniture and chatting with servicemen, William teased: "Keep the pizzas off the sofas!" Overhearing her husband's quip from across the room, the Princess of Wales playfully replied: "You're a nightmare with that!" Seems like the future King likes to wind down by tucking into a TV dinner from time to time… we can totally relate.
Prince Harry smoking
© Photo: Getty ImagesThe Duke of Sussex was a heavy smoker in his youth, but reportedly stubbed out his habit when he met his wife Meghan Markle.
Prince George's nail-biting
© Photo: Getty ImagesAnyone who's been treated to the vile taste of anti-nail biting solution as a child will know that nail biting is a habit that can be tough to crack. Prince George was spotted on Buckingham Palace's balcony during Trooping the Colour having a cheeky chew of his nails this summer – a habit he shares with his late grandmother, Princess Diana.
Queen Camilla was also nail-biting
© UK Press via Getty ImagesAnother royal pictured nail-biting was Queen Camilla. Caught in an off-duty moment, the royal was spotted biting her nails at Royal Ascot in June 2026. Caught up in the tension of the race, Camilla bit her nails briefly before resuming her view through her binoculars. The royal has rarely been pictured doing this, suggesting the high-stakes finish brought on the reflex.
Princess Margaret's smoking
© Photo: Getty ImagesThe late Queen Elizabeth II's sister Princess Margaret was a heavy smoker, lighting up to 60 cigarettes per day. From dozing in bed until the late morning to sipping on vodka at midday, Princess Marget's leisurely morning rituals also involved partaking in two hours of reading newspapers in bed while listening to the radio and "chain-smoking."
Princess Charlotte's cheeky faces
© Photo: Getty ImagesThe Prince and Princess of Wales' daughter Princess Charlotte is normally impeccably behaved, but during her younger years, the royal tot developed a cheeky habit of sticking her tongue out. The playful antics were famously captured at the King's Cup royal sailing regatta in 2016… much to Princess Kate's delight!-
