Smiling, the princess - who had arrived a little earlier for last-minute checks and to meet some of her guests - walked up to their car to meet them, warmly putting arms around their shoulders.
Royal fans couldn't get enough of the Princess of Wales 's crafty crown trick last night, as she made a fairytale appearance at the state banquet for the German president.
Prince William's wife, 43, was deployed by the King on Wednesday night to charm US President Donald Trump and his wife First Lady Melania Trump in an act of expert soft diplomacy.
Last year, the Princess of Wales caused quite a stir when an image Kensington Palace released of the family was quickly pulled from a number of photo agencies.
The Princess of Wales undertook her first solo public engagement in more than a year as she visited the London hospital where she has secretly undergone her own chemotherapy treatment.