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Crown Princess Marie-Chantal of Greece
Joe Giddens - PA Images//Getty Images The princess wore an asymmetrical powder blue dress which was custom designed for her by London-based designer Mary Katrantzou. She paired the look with a matching fascinator and pumps and a book-style clutch.
Crown Princess Victoria of Sweden
Jeff Spicer//Getty Images The Swedish heir to the throne went with a sleek, classic style in a midi sheath dress in cobalt blue and a matching pillbox hat.
Queen Maxima of the Netherlands
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Queen Suthida of Thailand
Mark Cuthbert//Getty Images The queen looked chic in a tailored long-sleeved slate blue and silver gown, accented by stunning gemstones.
Queen Rania of Jordan
WPA Pool//Getty Images Rania wore a pastel yellow midi dress, with subtly sheer, high-necked underpinnings and matching sleeves. She topped the look with a coordinating hat.
Queen Mathilde of Belgium
Mark Cuthbert//Getty Images The Belgian queen also opted for a pink look—in this case, an impressive cape-dress, paired with pearl jewelry and a white hat.
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Crown Princess Mette-Marit of Norway
Jeff Spicer//Getty Images Maria Teresa, Grand Duchess of Luxembourg
Mark Cuthbert//Getty Images The Grand Duchess stood out from the crowd, opting for a trousers look in a sleek navy, subtly evoking a tuxedo. A ruffled drape at the front added an extra feminine touch.
Princess Charlene of Monaco
Karwai Tang//Getty Images The Monegasque royal opted for a delicate shade of cream for her skirt suit, which was accented by a cape-like shoulder detail.
Lauren Hubbard is a freelance writer and Town & Country contributor who covers beauty, shopping, entertainment, travel, home decor, wine, and cocktails.
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