AKIPRESS.COM - It's something millions of us do every single day, but when the Duchess of Sussex closed her car door on Tuesday, the internet was watching and had something to say, BBC reports.

Arriving at the Royal Academy of Arts to attend her first solo event since becoming a royal, Meghan stepped out of her car - having had the door opened.

She then shut it behind her.

Some praised her "down to earth" and "humble" attitude, while others joked she may put someone out of a job.

Etiquette expert William Hanson pointed out that this was not in fact a protocol breach.

"Usually, if you are a member of the royal family or a dignitary, you have a member of staff to open and close a car door for you," he told Radio 1 Newsbeat.

He said this was for security reasons rather than "airs and graces".

It appears the person who opened the door then stepped out of the way to allow the Duchess, 37, to greet her host and then close the door behind her.

"A princess who still takes the time to shut her car door. Well done Meghan," the Sun's royal correspondent Emily Andrews tweeted.

Well and truly over-shadowing the main event - which was an opening of an exhibition of works from the Oceania region - the door soon became a Twitter moment.