The royal couple met baby Archie on Tuesday, a little more than a week after his birth on May 6.
A palace rep confirmed to that the private gathering took place today, with William and Kate paying a visit to new parents Meghan Markle and Prince Harry at their Frogmore Cottage home.
Earlier in the day, both Kate and Harry had royal engagements.
Kate visited a secret WWII spy base in Bletchley Park, while Harry visited children in Oxford.
The proud aunty dressed up for the occasion, wearing her Alessandra Rich blue-and-white polka dot dress and her go-to pearl drop earrings by Annoushka.
Prior to meeting his aunt and uncle, Archie, who is seventh in line to the throne, met his great-grandparents Queen Elizabeth and Prince Philip.
The family moment, which also included Meghan’s mom, Doria Ragland, was documented in a historic royal photo.