The Duchess of Cambridge dazzled in a diamond tiara that belonged to Princess Diana, as she arrived at Buckingham Palace for a state dinner with Queen Maxima and King Willem-Alexander on Tuesday evening.
King Willem-Alexander is making his first official state tour of the UK after ascending to the throne in 2013 follwing his mother Queen Beatrix's abdication.
The Dutch royals are currently on day one of a two-day state visit to the UK. The Dutch royal family last visited Britain in 1982, when Queen Beatrix was still on the throne with husband Prince Claus.