This time around, the royal attended the inaugural Global Ministerial Mental Health Summit with Prince William wearing a frock she wore on last year's goodwill tour of Poland and Germany.
Kate and Will chose a mental health summit as their first royal engagement after the Duchess' maternity leave.
The Duke and Duchess have been longtime supporters of mental health awareness, promoting their organization, Heads Together, to help mental health charities and groups around the country and the world. And so did William's jokes.
"Where can you hide it", Kate joked as she painted a white stroke, and which point Prince William said, "It's nearly ruined the picture", before adding, "No, this is probably how you ruin a picture" as he took his turn.
The Duke and Duchess had a chance to speak to young delegates at the summit about the challenges and issues they face.
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Taylor Swift accepts Artist of the Year during the 2018 American Music Awards on October 9, 2018, in Los Angeles . She added that the awards represented "encouragement and motivation to be better and work harder".
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But when asked again Sunday about it, he said different rules might apply if the same party controls the Senate and White House. Kennedy was a more moderate conservative who sometimes sided with the court's four liberal justices.
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The IMF, however, predicted Iran's economy will sink deep in the red due to renewed United States sanctions. Washington said on Friday it was considering waivers for nations that were reducing imports of Iranian oil.
They also heard presentations on two case studies of active mental health programmes from Slovenia and the United States of America and visited an exhibition area.
Middleton, who returned to her royal duties exactly one week ago to greet school children at a wildlife garden event, looked as stunning as ever for her latest engagement.
The couple also learned about Friendship Bench, part of an innovative programme from Zimbabwe, which has taught elderly women the skills to become trained 'community grandmothers'.
The couple is also preparing for another big event on Friday when William's cousin, Princess Eugenie, celebrates her Royal Wedding to fiance, Jack Brooksbank, at Windsor Castle.