Extraordinary footage appears to show Queen Camilla asking Princess Kate to move during Donald and Melania Trump's formal welcome at Windsor Castle.
The awkward exchange unfolded while Kate, 43, was chatting with the First Ladymoments after she touched down with President Donald Trump via helicopter, flanked with tight security.
Kate and Prince William were the first to greet the Trumps after they arrived on the Windsor Estate, with the two couples seen engaging in friendly conversation as they made their way to see King Charles and Camilla outside Victoria House.
POTUS and Melania exchanged warm greetings with the royal couple, and it was at this point that the conversation divided down the middle. Charles and President Trump engaged in a discussion, while Camilla and Melania also turned towards each other for a talk.
READ MORE: Donald Trump LIVE: Keir Starmer to give bombshell press conference with President
READ MORE: Prince William 'furious' with Prince Andrew after the Duchess of Kent's funeral
The princess began chatting away amicably with Melania, 55, while the Queen watched, looking around her as she did so.
This chinwag didn't last long, however, and, after just a few short moments, Camilla seemingly motioned for Kate to move by making a sweeping gesture with her hand.
Obliging, Kate appeared to say her goodbyes to Melania, before making her way towards husband William's side.
Camilla and Melania then spoke again very briefly as the party lined up, creating a path for the horse-drawn carriages, which would carry them onwards to Windsor Castle, where lunch awaited.

At last night's glittering state banquet, Kate dazzled in a Philippa Lepley full-length hand-embroided gold lace evening coat, worn over a silk crepe gown.
Featuring hand-embroidered roses with couched gold cording, accented with French knots and satin-stitched blooms, it's understood this elaborate coat is intended to highlight her commitment to supporting British craftsmanship and creativity.
The princess also wore the Royal Family Order of King Charles, Royal Family Order of Elizabeth II, Grand Cross of the Royal Victorian Order and GCVO Star and Sash.
Meanwhile, husband William looked dashing in a white tie and a Windsor tail coat, finished off with the Most Noble Order of the Garter Sash with the Lesser George.
The future king also donned his miniature medals – Order of the Bath and the Golden, Diamond and Platinum Jubilee and Coronation medal, plus Chest Orders of the Order of the Garter and Order of the Thistle and the Neck Order of the Order of the Bath.
Ahead of their glamorous dinner, the Prince and Princess of Wales uploaded a couple's snap via their social media channels, showing them in all their finery. They captioned the post: "Ready for The State Banquet."
Do you have a story to share? Email me at julia.banim@reachplc.com
READ MORE: Get a pair of Skechers £80 fur-lined boots that 'feel like slippers' for £32 today
You may also like
'Slap her if she visits Tamil Nadu': Congress leader KS Alagari stirs row with remark on Kangana Ranaut; BJP MP reacts
Sport is one area where there's no bias or reservation based on caste or age: Shashank Singh
Strictly Come Dancing's Balvinder Sopal rushed to medics with painful injury
British athlete hit with warning after breaking strict World Championship clothing rule
'I tried Cosori's dual-stacked air fryer and it's revolutionised how I use my kitchen'