Kate Middleton Dazzles in Red Dress for "Royal Carols: Together at Christmas" Promo

The Princess of Wales promoted Royal Carols: Together at Christmas in a crimson dress.

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Kate Middleton is excited about a Christmas concert.

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The Princess of Wales, 40, appeared in a new trailer for Royal Carols: Together at Christmas, The Royal Foundation's second annual Christmas carol event, wearing a shimmering red outfit.

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"Join us this Christmas Eve for a very special service at Westminster Abbey, full of festive carols and magnificent performances, as we celebrate what makes this the most lovely time of year," Kate says in the Sunday night promo.

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The Dec. 15 Westminster Abbey concert will feature her, Prince William, King Charles III, and Queen Camilla.

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Kate polled fans for the concert's finale last month. "Help us pick the Together at Christmas carol," she wrote.

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The royal family, charity professionals, community volunteers, frontline workers, military people, and others will "enjoy the joy that human connection can offer" at Princess Kate's festive gathering, according to Buckingham Palace.

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