The Duchess of Cambridge looked beautiful in the video which was filmed last week when she hosted her first-ever carol concert at Westminster Abbey.

The cashmere-jacquard cardigan is available online and has a price tag of £1,350.

The Duchess of Cambridge looked beautiful in the festive jumper.

During the trailer, she said: “I’m so excited to be hosting Together At Christmas here at Westminster Abbey.”

Kate kept her hair loose and styled it in a subtle wave.

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For makeup, the Duchess opted for a natural look with a dash of mascara.

The video shows the performance of some celebrities such as Leona Lewis, Ellie Goulding and Tom Walker.

Many fans took to social media to comment on the royal’s fashion choice.

For the event held last week at Westminster Abbey, the Duchess was seen wearing a long red coat.

The Catherine Walker design featured a bow detailing on the front and a midi skirt.

She combined the look with the Queen Mother’s sapphire and diamond fringe earrings, and a red Miu Miu handbag.

Prince William matched his wife as he wore a navy suit and red tie.