New York Times journalist, Julia Moskin, revealed the rule in a rare interview with the Duchess published earlier this week (2 April)

The Duchess of Sussex released her brand-new As Ever range on Wednesday (2 April)

We saved the bougiest 'til last...

This was the final official royal appearance from Prince Harry and Meghan Markle

Piers has claimed responsibility for an alleged feud between the royal cousins

The brother and sister duo have been making many more social media appearances recently

Dr Sophie Chandauka, head of Sentebale, was reportedly sent an 'imperious' message

Prior to Prince Harry and Meghan announcing their engagement, Meghan appeared on the cover of Vanity Fair

The debate has reared its head again following Meghan, the Duchess of Sussex's new show premiering on Netflix

The pair put the speculation to bed once and for all

Lady Eliza and Lady Amelia Spencer have made a shock announcement

The Duchess has been using a secret surname - the same as husband Prince Harry and their two children - for some time now

Meghan Markle released a new picture of Archie and Lilibet on Instagram

Fans have rushed to social media to share their thoughts on the Goop founder's latest Instagram post

The Duchess of Sussex took to Instagram earlier this afternoon (24 March) to share the sweet snap

The Duchess of Sussex took to Instagram over the weekend to share her latest kitchen creation

The comedian seemingly poked fun at the Duchess following a comment she made on her Netflix series, 'With Love, Meghan'

Markle's handwriting is all down to a very surprising profession

Not Skinny But Not Fat podcast host Amanda Hirsch received the unexpected note from Meghan

Not Skinny But Not Fat podcast host Amanda Hirsch said she was 'beyond shook' from the unexpected message

The Duchess of Sussex's St. Patrick's Day breakfast has raised some eyebrows

District Judge Carl Nichols ordered the release Harry’s immigration files as part of a Freedom of Information (FOI) request

Prince Harry revealed that reuniting with the royal family 'felt cold'

The Duchess of Sussex took to Instagram today to announce the news