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Many like to keep things simple but elegant
It's that time of year again. Royal Ascot becomes Royal Hat-scot as thousands of racegoers descend for Ladies' Day.
While fans of a flutter must observe a strict dress code, there is still plenty of room for creative expression - particularly when it comes to headwear.
As spectators basked in highs of 18C, they could have been forgiven for being distracted by the head-turning millinery on display.
Ladies' Day is traditionally the busiest of the five-day horse-racing extravaganza.
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No rah-rah skirts here, but this pom-pom hat was hard to miss
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Princess Eugenie of York joined the royal procession with a feathered friend - her hat
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The Queen was smiling during the royal procession with a matching lilac dress and hat
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A stiff breeze threatened to steal this lady's fascinator
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Avant-geared: Some people shunned the traditional floral theme and opted for something more industrial
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Jazzy hats aren't the only attraction - as this couple's electrifying outfits show
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Others opt for a more muted approach
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Feathers are a staple of the racing festival, but with winds of up to 12mph, some people literally had to hold onto their hats
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High tea meets high fashion: Alexa Holman from Miami sported a gravity-defying creation
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Blue-ming marvellous: Some people still managed to impress with floral designs
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The day is a great opportunity for milliners to display their designs
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Some pay lip-service to fashion, but for others it's a chance to really make a statement
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Katherine Flashman Kittson from Cornwall opted for this patriotic outfit
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Fascinators are banned in the Royal Enclosure, but the rules allow for headpieces with a base of 4in (10cm) or more in diameter
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Singing group the Tootsie Rollers co-ordinated their look as they performed
In the Royal Enclosure hats must be worn, strapless dresses are banned, midriffs must be covered, and trouser suits must be full length and matching.