Tanzanites and Bathrobes as the Obamas Dine at Kensington Palace

Prince Harry and the Cambridges host President and Mrs. Obama at Kensington Palace (Photo: Chris Jackson/Getty Images)

President and Mrs. Obama capped off a day in Britain with a dinner at Kensington Palace. William, Kate, and Harry were all on hand to host.

Photo: Chris Radburn – WPA Pool/Getty Images

Kate wore a suite of diamond and tanzanite jewelry that she debuted last year at St. Paul’s Cathedral. The necklace and earrings were made by Collins and Sons.

Photo: Chris Jackson/Getty Images

Here’s a look at the set from its previous outing, which was a service of commemoration for British troops who had been stationed in Afghanistan.

Photo: Pete Souza/The White House via Getty Images

But the jewelry really wasn’t the story of the event — it was the unexpected meeting between an American head of state and a bathrobe-clad future king.

Photo: Pete Souza/The White House via Getty Images

Prince George came out to greet the Obamas and demonstrate how much he enjoys the rocking horse they sent when he was born. It’s just good manners, even if it is bedtime.