Kate wore a green suit to Windsor Castle for a meeting with Norwegian royalty.

The two couples had a fruitful conversation about green energy, the environment, and other topics.

The Norwegian royals visited the United Kingdom to promote economic cooperation and strengthen energy cooperation.

Princess Mette-Marit was interested in literature and has spent years promoting it to young people.

The visit honored Norway's historical ties to the United Kingdom while also strengthening royal relations.

Haakon is Norway's heir apparent, and his father is a second cousin of the late Queen Elizabeth.

Haakon and Mette-Marit were last seen by William and Kate during their official visit to Norway in 2018.

Kate's suit was custom-made for her and is no longer available in that colorway from Burberry.

Mette-Marit wore a shimmering Falconetti dress by The Vampire's Wife, which Kate also owns in emerald green.