Kate Middleton and Queen Elizabeth Color Coordinate in Pastel for Garden Party

Kate Middleton Prince William 2019 Garden Party
Dominic Lipinski - WPA Pool/Getty Images

The day before, the Duchess of Cambridge gave the queen a tour of her garden at the Chelsea Flower Show.

It was a lovely day for a royal gathering!

Queen Elizabeth II, Kate Middleton and Prince William hosted the Royal Garden Party at Buckingham Palace on Tuesday, where the 93-year-old monarch and Duchess of Cambridge stepped out in color-coordinated pastel looks for the event.

Kate looked regal in a light pink coat dress by Alexander McQueen, which she paired with a matching Juliette Botterill fascinator and blush heels. She also donned the late Princess Diana's pearl earrings for the occasion. Meanwhile, the Duke of Cambridge looked dapper in a black morning coat, gray trousers, a blue shirt and vest, burgundy tie and a top hat.

DOMINIC LIPINSKI/AFP/Getty Images
Dominic Lipinski - WPA Pool/Getty Images

The queen greeted guests in a baby blue coat, a floral dress, white gloves and a matching blue Rachel Trevor Morgan hat. Her Majesty couldn't have been happier that the clouds went away and no rain came down on her guests, telling Victoria English, a teacher from Wales, "Well, you do rather hope the sun shines when you invite 8,000 people to have tea on your lawn. It can be a bit of a worry."

DOMINIC LIPINSKI/AFP/Getty Images

The royal garden parties recognize and reward public service and are held about three times a year.

The day before, Kate gave the queen a tour of her Back to Nature Garden at the Chelsea Flower Show. The mother of three introduced the queen to some features of the facility, which she helped to design to inspire children, families and communities to get outside and enjoy the benefits that nature has on people's physical and mental well-being.

GEOFF PUGH/AFP/Getty Images

Earlier in the day, the duke and duchess took their three children – George, Charlotte and Louis -- to check out the garden and play around.

For more on the royal family, see below.

RELATED CONTENT: