Kate Middleton's younger brother James released a never-before-seen wedding photo on Instagram for UK Mother's Day.

In the photo, James is seen embracing his mother, Carole Middleton, while a blurry figure in the background appears to be the Princess of Wales, Kate.

Fans speculate that the person behind James and Carole is Kate, and the person behind Kate is their sister, Pippa Middleton.

James married Alizee Thevenet in France, and the bride wore the same wedding dress that Carole wore 41 years ago.

It is believed that Kate and Prince William, along with their three children, attended the family wedding in the South of France.

The photo received positive comments from fans, with many expressing happiness and admiration for the royal family.

The previously unseen image offered a rare glimpse into the private lives of the Middleton family.

James often shares photos of his family on Instagram, including pictures of his dogs, his wife, and his siblings.

James is known for his advocacy work on mental health and his company, Boomf, which produces personalized gifts and greeting cards.