Kate Middleton has been slowly returning to work since completing chemotherapy treatment. The Princess of Wales, 42, started with low-key meetings before resuming major public appearances (even if she had to lean on Duchess Sophie for support).

Next month, Kate Middleton and her husband Prince William will welcome the Amir of Qatar and his wife to the United Kingdom as Kate makes her way back into public life

The security notice comes just weeks after a Windsor robbery.

Prince William and Kate Middleton have made their relationship work for years, and William once explained why they're so good together.

The Princess of Wales is set to play a role in the Emir of Qatar’s state visit to the UK next week. Kate, who is recovering from cancer, will join her husband the Prince of Wales in greeting Sheikh Tamim bin Hamad Al Thani and the first of his three wives,

"You can’t say she is back...but she is coming back," royal biographer Sally Bedell Smith recently told PEOPLE about Kate's gradual return to royal duties

Princess Kate has been confirmed to join Prince William for a major royal event amid next week's State Visit. Buckingham Palace confirmed the Princess of Wales, 42, will take part in the State Visit by the Amir of the State of Qatar to the UK from December 2 to December 4.