US President Donald Trump has arrived in the UK with First Lady Melania Trump, for their highly-anticipated three-day visit.
Stepping off the Marine One helicopter, the President and First Lady were greeted by the Prince of Wales and Duchess of Cornwall, on the grounds of Buckingham Palace.
The pair were then escorted to meet the Queen.
As expected, President Trump was slammed online only a few hours into his trip, for now bowing to Her Majesty. In true Donald fashion, he instead went for a handshake, that looked more like a fist bump.
WATCH BELOW:
{title}
{duration}
Shakira Tears up During Last Concert in Colombia
1:02
The Veronicas deny plane removal was for publicity
3:50
Inside the Anzac Day Dawn Service
1:23
New person of interest in William Tyrrell inquest
1:00
DISNEYLAND PARIS IN LOCKDOWN AFTER EXPLOSION
0:17
Love Island's Malin Andersson Shares Devastating News
0:40
Phoebe Burgess is smiling again
0:36
And and Yvie in snake drama
0:28
Hello
0:18
"Did...did that man just fist-bump our Sovereign? Get him on the block," one person wrote on Twitter.
Getty Images
While it was a horrifying act to witness by royal fans, there is actually "no obligatory codes of behaviour when meeting the Queen or a member of the royal family, but many people wish to observe the traditional forms."
According to guideline notes posted on the royal family's official website: "For men, this is a neck bow (from the head only) whilst women do a small curtsy. Other people prefer simply to shake hands in the usual way."