Prince William's wife cultivated a love of hockey during her years at Marlborough College, and before that, at St Andrew's School in Pangbourne where she also played tennis, swimming, netball and rounders.
Click on our gallery below to see some of the couple's best sporting moments – from cheering on their favourite sportsmen to enjoying romantic ski holidays in the mountains.
William is an accomplished polo player as well as a keen rugby and football fan. He is also president of England's Football Association.
The royal couple have also been frequent visitors to Wimbledon, supporting their friend, British star Andy Murray. The tennis ace revealed this week that Kate wrote him a congratulatory letter after he won the All England Club championship this year.
Click on the photo above to see a gallery of the couple's sporting moments.