Prince William and Kate Middleton
Britain's Prince William, the Duke of Cambridge, and his wife Kate, the Duchess of Cambridge, pose for photographers with the Eiffel tower in background after being welcomed by school children and students from the British Council's Somme project at the Trocadero square, in Paris, France, March 18, 2017. Reuters

Kate Middleton is reportedly annoyed after Prince William was caught having a fun night out with friends at a club in Switzerland. The 34-year-old royal skipped the Commonwealth Day service at Westminster Abbey, and went for ski trip in the Swiss Alps with his male friends.

An alleged source told InTouch: "[Middleton] expected [William] to do some serious skiing, have a few drinks with his mates and go to bed. He wasn't supposed to be spending time with women."

Kate was "left in tears" when she confronted Prince William about his alleged "boozy lunch" with a model and a nightclub waitress.

"He explained it all away by saying they just happened to be in the same mountain-top restaurant. Kate will stick by him, but this will take a bit of getting over," the insider added.

Amidst rumours that Kate Middleton and Prince William are on shaky grounds, the couple made a joint appearance for the Irish Guards' St. Patrick's Day Parade on 17 March at Household Cavalry Barracks in London, England.

Adding on, the royal duo also watched the RBS 6 Nations 2017 Rugby Union match held at at Stade de France on 18 March in Paris, France.