There are few things more embarrassing than being snubbed for a handshake or a high five - but imagine it happening in front of billions of people. Spare a thought for Alessandra Viggiano Marra, a Minister of the Embassy of Argentina, who found herself being ignored while entering Westminster Abbey for the Queen's funeral on Monday.
Ms Marra walked in with her husband, Javier Figueroa, the Argentinian ambassador to the UK, along with a number of other diplomats from around the world. Unfortunately, she became a viral sensation after footage of a doorman not taking her outstretched hand started cirulating on social media.
In TV footage that aired around the world, Ms Marra was seen putting her hand out to shake the doorman's hand, as he had been greeting many of the guests who were flooding in.
However, when she put her palm out she did not get a response and awkwardly had to pull her hand away.
Ms Marra was then seen muttering something under her breath as she walked away and went to take her seat with her husband.
She may have been hoping the embarrassing moment would go under the radar, but it was caught by the cameras in the Abbey and watched by an estimated four billion people.
The couple were both in the UK last year as they went to Buckingham Palace - and had a virtual meeting with the Queen due to the Covid restrictions which were in place at the time.
They presented 'letters of credence' - the formal papers accrediting an ambassador as head of a diplomatic mission.
Many people who were watching the funeral at home flocked to Twitter after watching the awkward moment unfold.
One person wrote: "I just got 2nd, 3rd and 4th hand embarrassment from that."
"If this was me 20 years from now I'd still be waking up in a cold sweat just at the memory of the shame," added another.
A third said: "Imagine going to HRM Queen Elizabeth II’s state funeral at Westminster Abbey in London and having your hand slapped away like this"
After the guest had all filed in, including world leaders such as US President Joe Biden and new Prime Minister Liz Truss, the royals entered behind the Queen's coffin.
Biden sat 14 rows back on the south transept behind the Polish leader and in front of the Czech Republic. The First Lady Jill Biden sat next to a leader from Switzerland.
All members of the Royal Family sat at the front of Westminster Abbey, with the first row featuring Prince Charles, the Queen Consort, and the Prince and Princess of Wales and their children Prince George, nine, and Princess Charlotte, seven.
Princess Anne and her husband Vice Admiral Sir Timothy Laurence, Prince Andrew, Prince Edward and the Countess of Wessex, Peter Phillips and Zara and Mike Tindall were also on the front row.
Camilla was seated next to Princess Anne and Vice Admiral Sir Timothy Laurence and beside them were Elizabeth’s two other children Prince Andrew and Prince Edward, with his wife Sophie the Countess of Wessex.
Prince Harry and Meghan Markle sat directly behind King Charles III and Camilla, Queen Consort, next to Princess Beatrice and her husband Edoardo Mapelli Mozzi.
After a moving service, the Queen was taken to Windsor Castle for the committal service, before a private ceremony with close members of the family later in the evening.
A wreath of flowers accompanied the Queen, draped over the late monarch's coffin, which will be buried with her in the King George VI Memorial inside St George's Chapel.
You can leave your tributes to Queen Elizabeth II here