Royal fans react as Justin Welby struggles to fit crown on King Charles' head

The King almost had an embarrassing moment during the coronation as the Archbishop of Canterbury struggled to put the crown on his head.

Millions watched Justin Welby place the crown on Charles's head - and continued to watch as the Archbishop of Canterbury battled to keep it there.

Royal fans flocked online to express their shock and worry that the precarious crown could fall off at any moment.

One wondered whether there would be a 'Cinderella-style hunt' for a head that would fit the crown.

Thankfully for King Charles III, the crown eventually settled on his head.

The Archbishop of Canterbury struggled to place the crown on the King's head 

The King almost had an embarrassing moment during the coronation as it appeared his crown was positioned precariously on his head

Royal onlookers were shocked at the trouble Welby had making the crown fit. 

One said: 'I mean... that crown didn't really fit, dit it? Had to really smash it on there.'

Another quipped: 'There's probably good reasons why they didn't, but why am I wondering why nobody checked if the crown fitted?

'Justin Welby was struggling there to fit it.'

It marked the moment he was crowned King - in the historic first Coronation in 70 years today - having prayed to be a 'blessing' to people of 'every faith and conviction', and serve his millions of subjects in Britain around the globe.

Charles became the 40th reigning sovereign to be crowned at Westminster Abbey, dating back to William the Conqueror in 1066, as Archbishop of Canterbury Justin Welby placed St Edward's Crown on his head.

Thankfully Justin Welby was able to crown the King in the historic coronation on Saturday

Royal fans flocked online to express their worry that King Charles III's crown would not fit

The historic moment, watched around the globe, was a fulfilment of the King's destiny, but followed the death of his mother, Queen Elizabeth II, last September after a 70-year reign.

The monarch and his wife Queen Camilla smiled to the congregation as they walked through the church for a Christian ceremony that dates back 1,000 years on a day dripping with glorious displays of pageantry.

The monarch had been heir to the throne since the age of three, and was ready to finally embrace his day of destiny with the woman he loves by his side.

Before his crowning moment the King was anointed with holy oil away from public view. He was dressed in a white linen garment called Colobium Sindonis, a golden coat called the Supertunica and has had the coronation girdle placed around his waist.

Many Royal fans took aim at Justin Welby after his crown struggles. One even suggested he whip out a spirit level to get the positioning just right

After being sanctified at his anointing, the King was presented with the coronation regalia. Minutes earlier Charles swore on the Bible and kissed it, having taken the oath: 'I, Charles, do solemnly and sincerely in the presence of God profess, testify, and declare that I am a faithful Protestant, and that I will, according to the true intent of the enactments which secure the Protestant succession to the throne, uphold and maintain the said enactments to the best of my powers according to law.'

His family were sat closest to him in a 2,300-strong congregation, although Prince Harry was sat in the third row, away from Prince William, his wife and children, and other working royals. 

The national anthem had played and crowds shouted God Save the King as Charles took their 1.3mile journey from Buckingham Palace to the Abbey through streets lined with two million people and 7,000 British troops.

The two-hour service, pared back from his mother's in 1953, is a pivotal moment in the history of the Royal Family will balance ancient tradition and a future in the 21st century.