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Amal and George Clooney arrive at Windsor Castle for the wedding ceremony of Prince Harry and Meghan Markle. As described by fashion commentator Caryn Franklin, Amal was radiant in an "artfully tilted canary yellow brim and matching fitted dress; a wonderful tonal choice for her complexion." The hat, designed by Stephen Jones, was also adorned with a chic sequin detailed mini-veil. "A wonderful tonal choice for her complexion," Franklin adds.
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US presenter Oprah Winfrey wore a 70s inspired wide-brimmed hat by Philip Treacy. Dressed in dusty pink and cream -- Winfrey takes on all the colors associated with spring-time weddings. It was embellished with a large floral arrangement.
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Camilla, the Duchess of Cornwall, wore an elaborate pastel pink tilted hat that incorporated swooping silk feathers. This, too, was also designed by Philip Treacy.
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Serena Williams, a close friend of Meghan Markle wore a delicate and seasonal ruffled fascinator matched perfectly with her long sleeved pink Versace dress. "The dress is the perfect foil to a tall and imposing sculptural headpiece," fashion commentator Caryn Franklin says.
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Lady Kitty Spencer arrived at Windsor in a delicate teal green fascinator with a knotted sculptural feature. Here, tradition meets contemporary.
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Actresses Abigail Spencer and Priyanka Chopra arrive wearing shades of blue and purple -- popular spring-time colors at this year's royal wedding.
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For tastemaker and design expert Stephen Bayley, "A hat is not protection for the head, it's a demonstration of the soul. Every nuance of style, shape, color betrays the ambitions and status of its wearer. It may be a pretty scene, but it's also cruelly revealing."
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Karen Spencer the wife of Charles Spencer, 9th Earl Spencer, arrived in a violet contemporary fascinator -- adorned with abstract bows.
CNN  — 

The custom of wearing an elaborate hat or fascinator on one’s head is never more prevalent than at a royal wedding, and guests didn’t disappoint during Prince Harry and Meghan’s celebrations on Saturday.

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Lady Kitty Spencer opted for a refined teal green fascinator with a knotted sculptural feature.

Friends, family members and celebrity guests turned out in an array of colorful and sculptural hats, fascinators and hatinators, some crafted by the world’s leading milliners.

From prominent human rights lawyer Amal Clooney in an artfully tilted canary yellow brim to US presenter Oprah Winfrey in a traditional cream wide-brimmed hat, there were plenty of interpretations of a look that is synonymous with British summer weddings.

For tastemaker and design expert Stephen Bayley, “A hat is not protection for the head, it’s a demonstration of the soul. Every nuance of style, shape, color betrays the ambitions and status of its wearer. It may be a pretty scene, but it’s also cruelly revealing.”

Fashion commentator Caryn Franklin said Amal Clooney was radiant in yellow: “(It’s) a wonderful tonal choice for her complexion.”

Her hat, designed by Stephen Jones, was also adorned with a chic sequin detailed mini-veil.

“Already a seasoned performer in front of the camera, her body language and grace is polished,” Franklin added of Clooney.

IAN WEST/AFP/Getty Images
US presenter Oprah Winfrey wore a 70s inspired wide-brimmed hat by Philip Treacy.

Winfrey wore a ’70s inspired wide-brimmed hat by Philip Treacy – embellished with an extravagant floral arrangement. Dressed in dusty pink and cream – Winfrey takes on all the colors associated with springtime weddings.

This year, many guests arrived wearing three dimensional sculptural shapes – with the majority going for bold styles where tradition meets contemporary.

That included Lady Kitty Spencer, who arrived at Windsor in a teal green fascinator with a knotted sculptural feature.

Fashion statement or a window into the soul, hats at weddings are always a talking point and this royal occasion proved no different.

Click through the gallery above to see the most extraordinary headpieces on show.