Meanwhile, 3-year-old Charlotte - in a blue sweater and dark skirt - brings her signature sass in the pic, flashing an adorable smirk as she wraps her arms around her mom and dad.
Fans seemed to approve of the image online, with one noting, "What a attractive photo of such a happy couple!" Diana was pictured on her ninth birthday while on holiday in Itchenor, West Sussex, ever so slightly turning away from the camera.
"The Duke and Duchess of Sussex are delighted to share a new photograph from their Wedding Reception at Frogmore House on 19th May". With their backs to the camera and fireworks going off, the romance of the pic is ideal for their first holiday card as a married couple.
While it's the first official glimpse the couple have given from inside their reception, it's also their first official Christmas card together after finally tying the knot. The photo has been used on the Cambridges' Christmas card.
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The royal family gathers on Christmas Eve to exchange gifts, following the German tradition.
In a rare statement, the Royal Family claimed the incident "never happened", but had no comment on reports Kate was in tears at a bridesmaid dress fitting for her daughter, Princess Charlotte, before the wedding. After breakfast on Christmas morning, they attend a church service followed by a country walk and games. After the service, the royal family greets well-wishers outside the church before heading back to Sandringham for Christmas lunch. A toast is part of the meal, which ranges from roast beef to turkey and ham.