Revealed: What it's really like to talk to Prince William and Harry

Harry definitely has a cheeky side while William has a "faint awkwardness". Photo / Getty Images

Fun-loving Prince Harry is so good at putting people at ease that it's just like chatting to a "normal person" when you meet him, royal insiders have revealed, while his brother William maintains a "faint awkwardness".

Speaking as part of a new documentary The Story of the Royals, which airs this week in the UK on ABC, commentators reveal how Harry can make people laugh "in seconds", and isn't afraid to joke at his own expense. reports the Daily Mail.

Meanwhile, William is more polished and charming and always knows the right thing to say, but maintains a "faint awkawardness".

The two-part documentary produced by People magazine and ABC also reveals how the Queen doesn't sleep with her beloved corgis because they snore.

Former soldier David Wiseman - one of the architects of Harry's Invictus Games, reveals in the documentary how the prince can only truly be himself when he's around veterans.

"I mean, he does have a cheeky side. He likes a joke, he likes his banter," he said.

"But there are only very few situations where he can let that shine, and one of those is when he's around the lads," he explained.

Prince Harry can make anyone laugh in seconds and isn't afraid to joke at his own expense. Photo / Getty Images

"He understands he comes from a position of privilege, and he's not ashamed of that. He understands it's his duty to use that to have a positive impact."

Wiseman added that Meghan is "incredibly passionate" and says he believes the pair have huge power to affect change.

According to royal biographer Penny Junor, William is "absolutely charming", and like his brother he's "very funny".

The prince is genuinely interested in people, according to the writer, but she added that he has a "faint awkwardness" that's completely absent with Harry.

Prince William is charming and knows the right things to say, but has a "faint awkwardness", according to royal biographer Penny Junor. Photo / Getty Images

Penny Junor said that both future kings have an air of something "different" about them, while Harry comes across just like any "normal person".

"Harry makes you laugh within seconds. He will make a joke at his own expense. He will make a joke at your expense.

"It's like talking to a normal person. With the Prince of Wales and with William, there's always a feeling that they are somebody a little bit different."