Kate Middleton and Prince William aren't afraid of public displays of affection.The Prince and Princess of Wales, both 44, were photographed embracing and kissing at a charity polo game on July 10 in Windsor, England.The heir to the throne had competed on the field and was part of the winning team, prompting the future queen to congratulate him with the rare PDA. The couple, who have typically avoided overt affection during royal appearances, held hands as they walked off the field.Kate donned a black-and-white gingham dress while William sported white pants, his team's blue uniform shirt, and a silver watch.Two days later, the couple was seen at the men's singles final of the tennis championships in London at the All England Lawn Tennis and Croquet Club, where Kate is a patron.The pair were seen smiling and waving at the Royal Box on July 12 with two of their three children: Prince George, 12, and Princess Charlotte, 11. Their youngest son, Prince Louis, 8, was not present despite his being known for his adorable antics at many royal appearances.William wore a dark gray suit with a striped tie, while Kate wore a draped olive-green day dress paired with a small tan handbag.Other stars present at the sporting event include Nicole Kidman, Jennifer Lopez, Andrew Garfield and Anna Wintour. Queen Camilla attended the tennis championships on July 8 with her younger sister, Annabel Elliott.The couple's recent outings come after William's younger brother Prince Harry returned to the UK after four years with his wife Duchess Meghan and their kids, Prince Archie and Princess Lilibet. The family reunited with King Charles on July 10 for the first time in four years, Buckingham Palace told the BBC.The brothers were in somewhat close proximity on July 7 when William visited the London Welsh School in West London, while Harry attended an event at Chatham House, the Royal Institute of International Affairs. Despite overlapping in the city where they were raised, the sons of Princess Diana did not cross directly paths.Contributing: Kim Willis and Jennifer Hassan, USA TODAY