Queen Maxima of the Netherlands in a blush pink hat covered with floral appliqués.

Princess Eugenie of York (left) in a yellow topper and Princess Beatrice of York (right) in a vibrant blue wide-brimmed hat that matched her lace dress.

Queen Elizabeth II in a periwinkle hat with blue floral accents that matched her dress.

Angelina Kali in a tropical, round floral hat that has us dreaming of summer.

Charlotte Carroll went for a sky-high tulle topper with multicolor pompoms throughout.

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A Royal Ascot attendee laughs in a bright yellow tulle top hat.

Christina Wilson in a magenta hat with matching feather details.

Flora Macdonald Johnston in an oversized straw hat with an extra large wide brim.

Emma Weymouth in a pale blue hat with bow accents at the top.

Camilla, Duchess of Cornwall in a pink wide-brimmed hat with a floral accent at the front.

Camilla Ridley-Day in a soft and feminine pale pink textured hat with a wide brim.

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Gayle Rinkoff in a black hat complete with a fluffy pink pompom.

Georgia Fowler in a blush pink Philip Treacy hat with rose detailing.

The Princess Royal (left) in a neutral feathered hat and the Countess of Wessex (right) in a pink wide-brimmed hat with green accents.

A Royal Ascot guest in an orange headpiece with matching feather and floral detailing.

A Royal Ascot attendee in a pale pink and white striped hat with dramatic floral accents.

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A Royal Ascot attendee in a navy blue hat with mesh tulle and feather detailing.

A Royal Ascot attendee in a tiny white topper.

A Royal Ascot attendee in a white flat textured hat.

A Royal Ascot attendee in a mini purple hat with matching floral appliqués.

A Royal Ascot attendee in a textured gray topper with butterfly appliqués and feather detailing.

A Royal Ascot attendee in a nude linen hat with matching ribbon accents and yellow floral detailing.

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A Royal Ascot attendee in a red headpiece covered in mesh with a matching coiled accent at the top.

A Royal Ascot attendee in a turquoise topper with white feather trimming.

A Royal Ascot attendee in a black hat covered in red heart detailing.

Isabell Kristensen in a pale green hat reminiscent of a lily pad with floral accents.

Jodie Kidd in a red headpiece topped off with an array of mini rainbow hats.

Jodie Kidd switches headpieces for a black hat with red and black floral accents.

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Kara Goodley sports a pink ruched satin hat.

Natalie Rushdie in an asymmetrical red topper with tulle accents.

Nazer Bullen in a coral feathered hat.

Rosie Tapner wearing a pale pink hat with a sculptural silhouette.

Zara Tindall in a pale blue hat with rose detailing and tulle accents.