They had to really smash it on': Royal fans react as Justin Welby struggles to fit crown on King Charles' head - as some worry it could fall off at any moment

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

Billions 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.