EXCLUSIVE: A body language expert has analysed Prince William and Princess Kate's appearance in London today and stressed there was one "telling" move made by the future King towards his wife.

Princess Kate Middleton joined husband Prince William and father-in-law King Charles III for a rare outing to welcome the leader of Qatar to the United Kingdom.

Prince William and Kate Middleton got the spotlight as they appeared together at Buckingham Palace to welcome Qatari royals along with King Charles in the Princess of Wales's latest return to

The Prince and Princess of Wales were the first to say hello to the Amir of Qatar, who is visiting the U.K. over the next two days

Prince William and his wife Kate will greet Qatar's emir, Sheikh Tamim bin Hamad Al Thani, and his wife on Tuesday as they begin a two-day state visit to Britain. The visit marks the return of Kate to formal welcoming duties after she missed the Japanese emperor and his wife in June while she was undergoing preventative chemotherapy for cancer.

Prince William may be the future King of England, but he is also a golden retriever husband. Royal fans are loosing it over a new video compilation of all the times a "clingy" William simped over his wife Kate Middleton.