Unless you've been living in blissful, off-grid seclusion (lucky you), you've probably got wind of the fact there's a Royal Baby on the way.
Baby Sussex is due imminently - although rumours are also swirling that Meghan Markle and Prince Harry's firstborn has already arrived.
Ever since the couple announced the pregnancy back in October, speculation and hearsay has gathered momentum.
As for what we actually know, this is very little.
The royals are famously private about pregnancy and birth details - and the Duke and Duchess of Sussex especially so.
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One thing which we can be certain of is the baby's surname.
Names, if you're royal, are not particularly straightforward.
While Prince George, Princess Charlotte and baby Louis will no doubt love their little cousin,despite sharing the same royal upbringing, there will be one big difference between the royal children - their surnames.
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George's official title is His Royal Highness Prince George of Cambridge, and his full name is George Alexander Louis.
But that probably doesn't fit on the school register.
So it's likely he took on the name George Cambridge when he started school at St Thomas's in Battersea last year.
Royal kids traditionally take their surnames from their parents' title.
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Princes William and Harry did this when they were growing up, going by the surname Wales.
Harry used this title when he was in the Army, serving as Officer Cadet Wales and then Captain Wales.
But this means Meghan Markle and Prince Harry's kids, if they decide to have them, will be known as something completely different.
If they continue the tradition, the little royals will use the surname Sussex.
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The Queen gave Meghan and Harry the titles Duke and Sussex on their wedding day, in the same way she did with Prince William and Kate Middleton back in 2011.
An official statement from Kensington Palace read: "The Queen has today been pleased to confer a Dukedom on Prince Henry of Wales.
"His titles will be Duke of Sussex, Earl of Dumbarton and Baron Kilkeel.
"Prince Harry thus becomes His Royal Highness The Duke of Sussex, and Ms. Meghan Markle on marriage will become Her Royal Highness The Duchess of Sussex."
