Queen Elizabeth II, Kate Middleton and Camilla Parker Bowles were stunning in the recent state banquet.

On Monday, the senior royals gathered together at Buckingham Palace. The Queen hosted a state banquet for U.S. President Donald Trump and his wife, Melania. For the event, the Queen, Duchess of Cambridge and Duchess of Cornwall looked stunning in their sparkling tiaras and white gowns, Town & Country reported.

Queen Elizabeth II arrived wearing Burmese ruby and diamond tiara, she paired with a diamond necklace. The headpiece crafted by Garrard features 96 rubies that were a gift to the Queen from the people of Burma.

On the other hand, the Duchess of Cornwall was equally gorgeous when she wore a Boucheron tiara for the occasion. Camilla’s tiara is more expensive than Princess Diana’s Cambridge Lover’s Knot tiara.

According to jewelry expert Deborah Papas of Prestige Pawnbrokers, Camilla’s headpiece has an estimated price between $1.3 million to $2.6 million. It features three very large tapered diamonds rub-over set in the center of the elongated hexagons which are pavé set with more diamonds. The top row has five tapered diamonds that are altered to a cluster of four diamonds and an extra marquise cut diamond at the center, giving it a grander and taller feel.

The Duchess of Cambridge didn’t miss the event and arrived at the state banquet with her favorite go-to Lover’s Knot tiara. She paired it with Queen Mother’s sapphire and diamond fringe earrings.

Middleton also wore the blue, red and white sash of the Royal Victorian Order after receiving the said honor from the Queen on her eighth wedding anniversary with Prince William last April. Middleton wore it over her beautiful white Alexander McQueen gown

All of the three royals looked gorgeous in their sparkling tiaras and white gowns. Melania Trump was also dashing in her sleeveless Dior Haute Couture dress and white gloves. Many netizens praised the first lady for her choice of outfit.

Meanwhile, Prince Harry seemed not in the mood for the occasion. According to royal commentator Ingrid Seward, the duke looked grumpy as if he didn’t want to be there.

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Britain's Queen Elizabeth, Camilla, Duchess of Cornwall and Catherine, Duchess of Cambridge (L-R) look at look at a Jubilee cake at the Fortnum and Mason food store in London March 1, 2012. Reuters