You could be forgiven for thinking you're seeing things after too much festive fizz, after spotting 'Prince Harry' in a new royal video.
The trailer for Kate Middleton's Together at Christmas carol concert, which is set to be broadcast on ITV today, featured guests arriving at Westminster Abbey for the service hosted by the Princess Of Wales when a seemingly familiar face appears.
Partway through, a smiling man with a ginger beard and wearing full military dress shows up, setting fans all aflutter with excitement.
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He appears around the 35 second mark in the video below:
Filmed previously on December 6, the Royal Carols: Together At Christmas will be shown at 7.30pm on Christmas Eve on ITV1 and ITVX.
It's the fourth time that this concert has been held at Westminster Abbey, with many fans finding this one particularly emotional following the revelation of the Princess Of Wales being treated for cancer this year.
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It is one of very few public appearances she has made this year, but it is sure to be festive.
Eagle-eyed fans noticed similarities between Harry and a mystery man in the trailer for the carol concert, as they seem to be of a similar height and build as well as the same colouring.
Could it be a Christmas miracle for the Royals and a truce has been formed between William and Harry?
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Sadly not, as it seems the claim that everyone has a twin is true, and the well-dressed gentleman isn't actually Prince Harry.
The man in question was dressed in the RAF's ceremonial uniform, which Prince Harry has previously been photographed in.
The Duke and Duchess of Sussex won't be appearing at the concert again, as Harry is thousands of miles away instead, and is said to be spending a quiet Christmas at home in California with wife Meghan and their two children, Archie, five, and Lilibet, 3.
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In the televised carol concert, Kate is seen looking festively stylish in a red Alexander McQueen coat, featuring a black bow.
The theme of this year's concert is love and empathy, with the Princess calling for people to 'slow down and reflect on the deeper things that connect us all' as well as turning to 'love, not fear'.
Kate says: "Christmas is one of my favourite times of the year, it is a time for presents, tinsel and mince pies, but it's also a time to slow down and reflect on the deeper things that connect us all.
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"It is when we stop and take ourselves away from the pressures of daily life, that we find the space to live our lives with an open heart, with love, kindness and forgiveness, so much of what the Christmas spirit is all about.
"The Christmas story encourages us to consider the experiences and feelings of others. It also reflects our own vulnerabilities and reminds us of the importance of giving and receiving empathy, as well as just how much we need each other in spite of our differences. Above all else, it encourages us to turn to love, not fear."
Kate concludes: "The love that we show ourselves and the love we show others. Love that listens with empathy, love that is kind and understanding, love that is forgiving, and love that brings joy and hope.
'It is love which is the greatest gift we can receive, not just at Christmas but every day of our lives."
Topics: Kate Middleton, Royal Family, Prince Harry, Christmas