Prince George and Princess Charlotte's new sibling could be named after one of William and Kate's favourite people

Prince George and Princess Charlotte's new sibling is only a few months away, but now it's been revealed that the third royal baby could be named after someone very close to Kate and William's hearts.

It's still a couple of months until the new addition to William and Kate's brood is due to be born, but speculation around the baby name they will pick has already started.

The couple haven't revealed if they are expecting a girl or a boy, but that hasn't stopped bookies from taking bets on the most likely names for Prince George and Princess Charlotte's little sibling.

The two little ones will be have another sibling to play with later this year

The top name on the list is currently Mary, followed by Alice and Victoria - so it's clear many people think Wills and Kate will be welcoming another girl.

However, the list also features the name Henry - sound familiar? That's because it's Prince Harry's real name, which could potentially be picked by Kate and William for their third child.

The 33-year-old, who's marrying Meghan Markle in May, shares a special bond with his older brother and his sister-in-law Kate and the trio has always been close.

When Harry got engaged, William said: 'Personally, I hope it means he stays out of my fridge and will stop scrounging all my food, which he's done for the last few years.'

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Harry is also a doting uncle to Prince George and Princess Charlotte, and it's clear the two tiny royals love him and his playfulness.

When meeting former US president Barack Obama, little Prince George was more taken aback with how his uncle was acting, letting it slip how he really behaves around his nephew.

Michelle said in an interview after the cute meeting: 'I have to say that the most precious thing – if you haven't already fallen in love with him [Harry] is to see him with his nephew. Because all throughout, [Prince George] was like "Uncle Harry, why are you so quiet? Why are you so quiet?"'

Could Kate and William pay tribute to Harry with their third child's baby name?

Prince Harry then said :'Normally I'm there throwing him around the room and stuff, so...', to what Michelle Obama replied: 'He's got a pretty good uncle over here'. The list of baby names that could be picked by William and Kate also features names of other members of the royal family, such as Elizabeth, which is of course the first name of the Queen and baby's great-grandmother.

Diana also makes an appearance, with 16/1 odds, but it's unlikely the couple will pick William's late mother's name as it's already Charlotte's middle name.

Jessica Bridge from Ladbrokes said: 'Punters are convinced the Duke and Duchess are expecting another little girl, and obviously it would be a lovely touch to honour Her Majesty's Grandmother, but it will be interesting to see if any boys' names are backed over the coming weeks before the birth.'

Are you betting on any names for the third royal baby? Let us know in the comments!