The Princess of Wales claimed victory over her husband in a light-hearted curling contest during the couple's trip to Scotland on Tuesday.
William and Kate, who hold the titles Duke and Duchess of Rothesay north of the border, visited Stirling's National Curling Academy as their first engagement of the day.
The royal pair met Team GB athletes preparing for the upcoming Winter Olympics and Paralympics in Milano-Cortina, which take place in February and March.
Curling ranks among Britain's most decorated winter sports, with Olympic and Paralympic teams having secured a combined eight medals in the discipline to date.
Princess Kate slips before outplaying Prince William in curling showdown amid Scotland visit
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Kate's early attempts on the ice proved challenging, with the princess slipping during several practice rounds and voicing her frustration when her stone failed to travel the required distance.
Despite these initial difficulties, she soon mastered the technique and went on to triumph in the competition.
Her husband fared better at the outset, delivering a smoother opening run than Kate managed.
However, when it came to the decisive moment, William's stone landed further from the target than his wife's, handing her the victory.
Princess Kate emerged victorious against William
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The princess achieved her win whilst wearing a skirt, having switched from heeled boots to flat black footwear for the ice.
The couple received expert tuition from some of Britain's finest curling talent before taking to the ice themselves.
Olympic gold medallist Jen Dodds and men's world champion skip Bruce Mouat guided William and Kate through the fundamentals of the sport, teaching them delivery technique, proper footwork and how to sweep effectively.
Both royals changed their footwear for the occasion, with the Prince of Wales swapping his brown oxfords for black trainers after the couple had earlier stopped at The Kelpies sculptures in Falkirk.
Princess Kate performed very well when trying the sport
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The sport traces its origins to 16th-century Scotland
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The pair then put their newly acquired skills to the test in their head-to-head competition.
Bruce Mouat expressed his delight at the royal visit, saying: "It was wonderful, really nice that they came to wish us good luck for the next month we are about to embark on, both of them were lovely and willing to curl."
The sport traces its origins to 16th-century Scotland, making the academy visit particularly fitting during the couple's trip to highlight the nation's heritage traditions.
Britain has enjoyed considerable success in curling at major international competitions, with teams across the Olympics and Paralympics accumulating six Olympic medals and two Paralympic medals throughout the years.