On Wednesday, during a visit to the mess hall at the Akrotiri Royal Air Force base, near the southern coastal city of Limassol, Kate wore wide-leg pants and a tailored blazer - a look we've seen sister-in-law Meghan, Duchess of Sussex, wear on a number of occasions.
During her first few months in the White House, Michelle focused on ensuring that her daughters were settled in before she took on any ambitious projects or causes. Prince Harry and Meghan Markle were not among the attendees at the ultra-formal event, but they had a good excuse. In November 2017, they paid the students at Hyde Park Academy in Chicago a surprise visit, where the duo engaged with learners for more than an hour.
Wednesday's meeting was a continuation of the Duchess of Sussex's speech which she gave at the University of the South Pacific in Fiji. The "Rodgers and Hammerstein-inspired" piece will look at the Duchess of Sussex's past and future as Meghan expects her first child with Prince Harry next year.
Despite rumours of the reported rift, Kate's family were in attendance - the Duchess' parents Michael and Carole Middleton were there, as well as her younger siblings, Pippa and James.
Serena, also 37, told People: "I'm like, 'How are you?' and she's like, 'No, how are you?' and I'm like, 'You're so sweet, but I'm really asking - how are YOU?'"
Serena and husband Alexis Ohanian, 35, also attended Meghan's lavish wedding to Harry, 34, in Windsor, Berkshire, in May.
Speaking about their friendship on her former lifestyle blog The Tig, Meghan said she and the tennis ace bonded very quickly when playing a game of flag football, which is a variation of American football. But given that the stories of tension recently leaked from Kensington Palace actually date back to about that time - the moment suddenly seems much more significant.