We might know them as Prince Harry and Meghan Markle - but it seems that's not what they call each other.
When at home, the pair have nicknames that they use for each other - that had previously been private.
But Meghan once let slip the other name she sometimes uses for her husband Harry -and it saw him mocked by one of his celebrity friends.
It came in 2021 when Harry appeared on an episode of the Late Late Show with James Corden and the pair took a bus tour around LA.
At one point, James video calls Meghan and she spots Harry in the background and asks him: "Haz, how is your tour of LA going?", revealing his nickname.
Later James, a pal of Harry's, mocked: "Haz! I didn't know we were calling you Haz!" cried Corden.
To which Harry quipped: "Well you aren't my wife."
Meanwhile, it's not the only time Meghan has referred to Harry by a nickname.
She also did it during an appearance on The Ellen Show, when she began to discuss the amazing bond between her children and revealed her nickname for Harry.
She said: "He [Archie] loves being a big brother. Everyone tells you, someone told H and I, you have one kid as a hobby, two children is parenting."
And recently in his autobiography Spare, Harry revealed the nicknames he and brother William use for each other.
Throughout the book, he refers to his older brother as Willy with William calling his younger sibling Harold.
Prince Harry's real name is rarely used and his surname even less so.
His full title is Prince Henry Charles Albert David, Duke of Sussex, Earl of Dumbarton, Baron Kilkeel, formerly Prince Harry of Wales.
When Harry served in the army, he was known as Harry Wales, and even gave his son Archie a middle name after himself; Harry's son - Harrison.
Meanwhile, similar to Harry, Meghan's real first name is also not Meghan.
When she was born, she was officially called Rachel Meghan but has used her middle name, which her parents have called her since birth.
All of her friends call her Meghan, with many also referring to her as Megs in interviews.
But ironically Rachel was the name of her popular character in her hit legal drama Suits.