The Norwegian royals visited London for a working visit.

Prince William and Kate met with Crown Prince Haakon and Crown Princess Mette-Marit at Windsor Castle.

They discussed green energy solutions with representatives from leading Norwegian businesses.

Kate wore an emerald green suit with a matching pussybow blouse, while Mette-Marit wore a striking red dress.

William and Kate welcomed the Norwegian royals and discussed the environment.

There are close ties between the UK and Norway, both historically and economically.

William and Kate last met with the Norwegian royals in February 2018 during their royal tour of Norway.

The Crown Prince and Princess' 14-year-old daughter showed the Duke and Duchess of Cambridge Princess Ingrid Alexandra Sculpture Park.

Kate wore an Alexander McQueen gown to a state dinner with the Norwegian royals.