brooch

They also gave the Queen a Tiffany & Co vintage 18-carat gold, diamond and ruby flower brooch.

From the First Lady's hat, to the Princess of Wales's feather brooch, here are some of the most eye-catching looks so far.

She is also making brightly coloured brooches people can take away from the exhibition.

She wore a diamond maple leaf brooch that was given by King George VI to Queen Elizabeth, the Queen Mother, in 1939 ahead of their first royal tour to Canada.

He also stayed on theme by accessorising with embellished gloves, a brooch and a hat that paid homage to his Puerto Rican heritage.