The Princess of Wales will take on her biggest royal role since finishing chemotherapy treatment, with a major appearance next week. It has been confirmed that she will participate in the Emir of Qatar's state visit to the UK alongside other members of the Royal Family . Kate, who is recovering from cancer, will join her husband Prince William in greeting Sheikh Tamim bin Hamad Al Thani and the first of his three wives, Sheikha Jawaher bint Hamad bin Suhaim Al Thani, at Kensington Palace next