Why Meghan Markle & Prince Harry will be 'one of the world’s most successful partnerships’ (Exclusive)

Meghan Markle and Prince Harry are already changing the face of the royal family. 

Royal fans are feverishly anticipating the couple's May 19 wedding date, and ET recently spoke to royal commentator Richard Fitzwilliams about why the couple's upcoming nuptials are so significant. 

"This is a marriage, it’s based on love," Fitzwilliams says. "It’s not based on what one would call ‘vetting.’  ... [Harry] needed the queen’s permission and that was given with delight." 

He also points out how Harry's relationship with Meghan is so different from his father, Prince Charles', marriage to his mother, Princess Diana. Charles and Diana eventually divorced, and Charles remarried his previous girlfriend, Camilla Parker Bowles.

"Prince Charles so hatefully found that he could only marry someone who had no past and also had to be either royal or aristocratic," Fitzwilliams says. "The entire situation has altered. We saw William marry Kate who is middle class, but also has ancestors who are coal miners, marry for love. This represented a step, a significant change. With Meghan, she’s American, she’s divorced, she’s mixed race, she’s an actress and an activist."

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Prince Harry and Meghan Markle engagement photo call
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Prince Harry and Meghan Markle engagement photo call
Britain's Prince Harry and his fianc� US actress Meghan Markle pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Britain's Prince Harry and his fianc� US actress Meghan Markle pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Meghan Markle with her engagemnt ring during an official photocall to announce the engagement of Prince Harry and actress Meghan Markle at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and actress Meghan Markle during an official photocall to announce their engagement at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Chris Jackson/Chris Jackson/Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and Meghan Markle during an official photocall to announce the engagement of Prince Harry and actress Meghan Markle at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and actress Meghan Markle during an official photocall to announce their engagement at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Chris Jackson/Chris Jackson/Getty Images)
Britain's Prince Harry stands with his fianc� US actress Meghan Markle as she shows off her engagement ring whilst they pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Britain's Prince Harry and his fianc� US actress Meghan Markle pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Prince Harry and Meghan Markle at a photocall to announce their engagement at Kensington Palace, London. Photo credit should read: Doug Peters/EMPICS Entertainment
Prince Harry and Meghan Markle at a photocall to announce their engagement at Kensington Palace, London. Photo credit should read: Doug Peters/EMPICS Entertainment
Prince Harry and Meghan Markle at a photocall to announce their engagement at Kensington Palace, London. Photo credit should read: Doug Peters/EMPICS Entertainment
Prince Harry and Meghan Markle at a photocall to announce their engagement at Kensington Palace, London. Photo credit should read: Doug Peters/EMPICS Entertainment
Britain's Prince Harry and his fianc� US actress Meghan Markle pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
US actress Meghan Markle shows reacts as she poses with her fianc� Britain's Prince Harry in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / DANIEL LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Britain's Prince Harry and his fianc� US actress Meghan Markle pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Britain's Prince Harry and his fianc� US actress Meghan Markle arrive to pose for photographs in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and actress Meghan Markle during an official photocall to announce their engagement at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Chris Jackson/Chris Jackson/Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and actress Meghan Markle during an official photocall to announce their engagement at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Chris Jackson/Chris Jackson/Getty Images)
Britain's Prince Harry and his fianc� US actress Meghan Markle pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and actress Meghan Markle during an official photocall to announce their engagement at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Chris Jackson/Chris Jackson/Getty Images)
Britain's Prince Harry and his fianc� US actress Meghan Markle pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Britain's Prince Harry stands with his fianc� US actress Meghan Markle as she shows off her engagement ring whilst they pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Prince Harry and Meghan Markle in the Sunken Garden at Kensington Palace, London, after the announcement of their engagement. (Photo by Dominic Lipinski/PA Images via Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and Meghan Markle during an official photocall to announce the engagement of Prince Harry and actress Meghan Markle at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and Meghan Markle during an official photocall to announce the engagement of Prince Harry and actress Meghan Markle at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Mark Cuthbert/UK Press via Getty Images)
Britain's Prince Harry and his fianc� US actress Meghan Markle pose for a photograph in the Sunken Garden at Kensington Palace in west London on November 27, 2017, following the announcement of their engagement. Britain's Prince Harry will marry his US actress girlfriend Meghan Markle early next year after the couple became engaged earlier this month, Clarence House announced on Monday. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
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"You’ve got, in fact, in Meghan, the link between two worlds -- monarchy, which is in a sense theater with its ceremonial links to the past and traditions -- and you’ve also got Meghan from a world which, as an actress, she plays various roles, and she’s also experienced in handling press attention, which is absolutely pivotal," he continues. "But, regarding the actual royal, so to speak, attitude, it seems to have been warm, it seems to have been welcoming."

Clearly, Meghan has been embraced by the royal family. In an unprecedented move by the queen, Meghan is the first royal fiancee to be invited to her estate, Sandringham, for Christmas. 

"It’s also important to remember that Harry is tremendously popular," Fitzwilliams notes. "And this is an engagement that has been really welcomed by absolutely everybody who’s commented on it. ... And also that Meghan has built her own career. She will be giving up acting and she described that in her wonderful interview."

"You can see how in love they were because the chemistry was perfect," he continues about their first interview together as a couple. "You could also see that she described it as ‘a change,’ and that will mean that she and Harry will make one of the world’s most influential and successful partnerships, using the fact that they’re members of the royal family for charitable purposes."

Fitzwilliams points out the late Princess Diana's influence on Harry, and how Meghan may follow Diana's footsteps when it comes to philanthropy.

"In every single case now, we are watching the way Diana’s influence has shaped William and also Harry. And most particularly when they had that photo opportunity, it was in the Sunken Garden at Kensington Palace, that was one which Diana loved," he notes of Harry and Meghan's engagement photos in November. "Meghan’s engagement ring has diamonds from Diana’s collection. And it’s Harry’s personal ambition that Diana would be proud of what he had achieved from a charitable point of view."

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Prince Harry and Meghan Markle's first royal visit
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Prince Harry and Meghan Markle's first royal visit
Britain's Prince Harry and his fiancee Meghan Markle arrive at an event in Nottingham, December 1, 2017. REUTERS/Eddie Keogh
NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle visit Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor in May 2018. (Photo by Christopher Furlong/Getty Images)
Britain's Prince Harry and his fiancee US actress Meghan Markle greet wellwishers on a walkabout as they arrive for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
NOTTINGHAM, ENGLAND - DECEMBER 01: Meghan Markle visits Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor in May 2018. (Photo by Christopher Furlong/Getty Images)
People hold U.S. and British flags as they wait for Britain's Prince Harry and his fiancee Meghan Markle to attend an event in Nottingham, December 1, 2017. REUTERS/Eddie Keogh
Britain's Prince Harry and his fiancee US actress Meghan Markle greet wellwishers on a walkabout as they arrive for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle interact with crowd as they visit Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor in May 2018. (Photo by Christopher Furlong/Getty Images)
People hold U.S. and British flags as they wait for Britain's Prince Harry and his fiancee Meghan Markle to attend an event in Nottingham, December 1, 2017. REUTERS/Eddie Keogh
Britain's Prince Harry and his fiancee US actress Meghan Markle are greeted as they arrive to attend a Terrence Higgins Trust World AIDS Day charity fair at Nottingham Contemporary in Nottingham, central England, on December 1, 2017. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. During their first engagament of the day at a Terrence Higgins Trust World AIDS Day charity fair the prince and Markle met representatives from a number of institutes and charities that do specific work around HIV/AIDS. / AFP PHOTO / POOL / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
Chelsea Pensioners deliver a jumbo hand-signed engagement card to Prince Harry and Meghan Markle at Kensington Palace in London. (Photo by Stefan Rousseau/PA Images via Getty Images)
Britain's Prince Harry greets wellwishers on a walkabout as he arrives for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
People look out from a window above Kringle's Toy Emporium as they wait to greet Prince Harry and his fiancee US actress Meghan Markle when they arrive for a walkabout and an engagement at the Nottingham Contemporary in Nottingham, central England, on December 1, 2017. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / POOL / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
Britain's Prince Harry and his fiancee Meghan Markle greet well wishers as they arrive at an event in Nottingham, December 1, 2017. REUTERS/Eddie Keogh
Meghan Markle arriving at the Nottingham Contemporary in Nottingham, to attend a Terrence Higgins Trust World AIDS Day charity fair on their first official engagement together. (Photo by Joe Giddens/PA Images via Getty Images)
Police secure the area as wellwishers line the street waiting to greet Prince Harry and his fiancee US actress Meghan Markle along the route of a walkabout outside the venue Nottingham Contemporary during a visit to Nottingham, central England, on December 1, 2017. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
Britain's Prince Harry's fiancee US actress Meghan Markle greets wellwishers on a walkabout as they arrive for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
Crowds gather outside the Nottingham Contemporary in Nottingham, ahead of a visit by Prince Harry and Meghan Markle to a Terrence Higgins Trust World AIDS Day charity fair on their first official engagement together. (Photo by Victoria Jones/PA Images via Getty Images)
Britain's Prince Harry and his fiancee US actress Meghan Markle are greeted as they arrive to attend a Terrence Higgins Trust World AIDS Day charity fair at Nottingham Contemporary in Nottingham, central England, on December 1, 2017. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. During their first engagament of the day at a Terrence Higgins Trust World AIDS Day charity fair the prince and Markle met representatives from a number of institutes and charities that do specific work around HIV/AIDS. / AFP PHOTO / POOL / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
Britain's Prince Harry's fiancee US actress Meghan Markle greets wellwishers on a walkabout as they arrive for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle interact with crowd as they visit Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor in May 2018. (Photo by Christopher Furlong/Getty Images)
A wellwisher (C) holds a hot water bottle as she stands in a crowd waiting to greet Prince Harry and his fiancee US actress Meghan Markle along the route of a walkabout outside the venue Nottingham Contemporary during a visit to Nottingham, central England, on December 1, 2017. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / POOL / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
Prince Harry and Meghan Markle during a visit to the Nottingham Contemporary in Nottingham, to attend a Terrence Higgins Trust World AIDS Day charity fair on their first official engagement together. (Photo by Victoria Jones/PA Images via Getty Images)
Crowds gather outside the Nottingham Contemporary in Nottingham, ahead of a visit by Prince Harry and Meghan Markle to a Terrence Higgins Trust World AIDS Day charity fair on their first official engagement together. (Photo by Victoria Jones/PA Images via Getty Images)
Britain's Prince Harry and his fiancee US actress Meghan Markle greet wellwishers on a walkabout as they arrive for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
A person is seen reading the London Evening Standard with the news that Prince Harry has announced his engagement to Meghan Markle, London, Britain, November 27, 2017. REUTERS/Darrin Zammit Lupi
Britain's Prince Harry and his fiancee Meghan Markle greet well wishers as they arrive at an event in Nottingham, December 1, 2017. REUTERS/Eddie Keogh
Britain's Prince Harry greets wellwishers on a walkabout as he arrives for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
Britain's Prince Harry and his fiancee US actress Meghan Markle greet wellwishers on a walkabout as they arrive for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
Prince Harry and Meghan Markle arrive at the Nottingham Contemporary in Nottingham, to attend a Terrence Higgins Trust World AIDS Day charity fair on their first official engagement together. (Photo by Joe Giddens/PA Images via Getty Images)
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"It’s Diana’s influence that both William and Harry have been stressing so frequently," he adds. "And I do think that he sees Meghan as carrying the torch as well, for remembering what she achieved in her short life. It’s very, very significant for Harry."

As for what causes Meghan may personally take up, aside from her work with World Vision Canada in gender equality, Fitzwilliams predicts diversity may be one of them. 

"She’s been very outspoken about diversity and some of the difficulties that she faced, and I think that that’s one of the issues that we may well hear her speak more on," he muses. "Because obviously, both gender equality and diversity are extremely significant for us today." 

During Harry and Meghan's first joint interview with BBC News, Harry said Princess Diana and Meghan would be "thick as thieves" if his mother was still alive today.

"I think she would be over the moon, jumping up and down, so excited for me," he said of their engagement. "But then she probably would have been best friends with Meghan. So, it is days like today when I really miss having her around. I miss being able to share the happy news. But the ring and with everything else going on, I'm sure she's with us, jumping up and down somewhere."

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