The Royal Family all seem to have nicknames (Image: GETTY) Nicknames are allegedly a way of relieving “family tension”, as the Royals are “not very good at communicating”. It was recently reported that Kate, Duchess of Cambridge calls Prince William “baldy” and he calls her “Duchess of Dolittle”. Meanwhile, the pair apparently called Prince George “our little grape” when Kate was pregnant. Related articles Queen Elizabeth II: How does the Queen travel when she goes abroad? Kate Middleton decorated kids' rooms with furniture from this store A Royal source told The Sun: “The Royals are not very good at communicating with one another so this is one way around it. “Nicknames are a way of taking the family tension out of things.” They added that the Royals also like to use them to just be silly, as they have to be quite serious in their public lives. They said: “They can also be a rather childlike family. They love to play games and they give each other silly presents. The Duke and Duchess of Cambridge (Image: GETTY) “I think it’s because they have to be so earnest in their public lives. “Royals have always played in private. So William and Kate are really carrying on a long held tradition.” They added: “It’s done with affection usually and there are grains of truth about what one feels about the other.” Meghan Markle and Prince Harry are apparently not left out when it comes to nicknames. Related articles Australian man claims he's Prince Charles and Camilla's love child Meghan Markle net worth: Royal's HUGE fortune from before wedding The Duke and Duchess of Sussex (Image: GETTY) Harry has managed score himself three related to three fictional characters: "Flash", referring to fictional army officer Harry Flashman, as well as "Potter", a nod to the famous wizard, and "Gromit". Meghan on the other hand, is reportedly called “Bean” by her father, “Flower” by her mother and “Tungston” by father-in-law Prince Charles. Another Royal insider told The Sun nicknames can also be useful for security reasons. They said: “Nicknames for the Royals may seem like a bit of fun. “But they do sometimes use them to identify one another while not making that information public.”All rights reserved for this news site express.co.uk and under his responsibility