Meghan Markle gracefully holds on to Prince Harry as she nearly falls at Princess Diana's niece's wedding

Meghan Markle and Prince Harry still have that newlywed glow.

The couple attended the wedding of Harry's cousin Celia McCorquodale to George Woodhouse in Stoke Rochford, England, on Saturday, both looking happier than ever. Celia is the daughter of Lady Sarah McCorquodale, the late Princess Diana's eldest sister.

Meghan stunned in a blue and white patterned Oscar de la Renta dress -- which retails for $5,490 -- which she paired with a white fascinator and white heels. 

Prince Harry and Meghan Markle attend the wedding of Harry's cousin Celia McCorquodale to George Woodhouse in Stoke Rochford, England on June 16, 2018.
Geoff Robinson Photography / Splash News
Prince Harry and Meghan Markle attend the wedding of Harry's cousin Celia McCorquodale to George Woodhouse in Stoke Rochford, England on June 16, 2018.
Geoff Robinson Photography / Splash News

But the 36-year-old Duchess of Sussex's heels proved to be a bit of a challenge on the grass. In video obtained by The Daily Mail, Meghan avoided a little slip as she walked, thanks to Prince Harry keeping hold of her hand.

On Thursday, Meghan had her first solo outing with Queen Elizabeth II to three royal engagements in Cheshire, England, and royal expert Katie Nicholl explained to ET why the occasion was so special.

"It's unprecedented, actually, for the queen to take such a new member of the royal family on the royal train," Nicholl said. "She didn't do that for Kate [Middleton]. They traveled on a regular train, albeit in first class, when the queen took Kate on her first away day, and Kate had to wait nine months before the queen invited her away. So, Meghan has been taken away within her first month of being married, aboard the royal train, and I think you only needed to look at their body language and the warmth between the two of them to see just how warmly embraced Meghan has been by the queen."

"I'm told by palace sources that it was the queen who personally invited Meghan to Cheshire," Nicholl added. "Meghan should feel very privileged because this is the queen extending an arm of friendship, but not just that. She is tutoring Meghan. She is mentoring Meghan. The queen, who has reigned over the U.K. and the commonwealth for 66 years, is making the time in her very busy schedule to say to Meghan, 'OK, I'm going to show you, personally, the royal ropes. I'm going to take you away for the day and show you how this works.'"

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Meghan Markle makes first solo outing with Queen Elizabeth
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Meghan Markle makes first solo outing with Queen Elizabeth
WIDNES, CHESHIRE, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex arrive to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
WIDNES, CHESHIRE, ENGLAND - JUNE 14: Queen Elizabeth II laughs with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex arrive at Runcorn Train Station on June 14, 2018 in Chester, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Neil Mockford/GC Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex arrive at Runcorn Train Station on June 14, 2018 in Chester, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Neil Mockford/GC Images)
RUNCORN, CHESHIRE, ENGLAND - JUNE 14: Queen Elizabeth II is greeted with Meghan, Duchess of Sussex as they arrive by Royal Train at Runcorn Station to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Runcorn, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Peter Byrne - WPA Pool/Getty Images)
WIDNES, ENGLAND - JUNE 14: Queen Elizabeth II sits with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
WIDNES, ENGLAND - JUNE 14: Queen Elizabeth II sits with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
WIDNES, ENGLAND - JUNE 14: Queen Elizabeth II stands and laughs with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
WIDNES, ENGLAND - JUNE 14: Queen Elizabeth II sits and laughs with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II sitts and laughs with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II stands with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II sitts and laughs with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
WIDNES, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex during a visit to the Catalyst Museum by the Mersey Gateway Bridge on June 14, 2018 in Widnes, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex. This is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Mark Cuthbert/UK Press via Getty Images)
WIDNES, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex during a visit to the Catalyst Museum by the Mersey Gateway Bridge on June 14, 2018 in Widnes, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex. This is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Mark Cuthbert/UK Press via Getty Images)
RUNCORN, CHESHIRE, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex arrive by Royal Train at Runcorn Station to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Runcorn, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Peter Byrne - WPA Pool/Getty Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II sits with Meghan, Duchess of Sussex during a ceremony to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex arrive to open the new Mersey Gateway Bridge on June 14, 2018 in the town of Widnes in Halton, Cheshire, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Jeff J Mitchell/Getty Images)
CHESTER, ENGLAND - JUNE 14: Children look on as Queen Elizabeth II and Meghan, Duchess of Sussex arrive for their visit to the Storyhouse on June 14, 2018 in Chester, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Phil Noble - WPA Pool/Getty Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex visits the Storyhouse on June 14, 2018 in Chester, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Phil Noble - WPA Pool/Getty Images)
CHESTER, ENGLAND - JUNE 14: Queen Elizabeth II and Meghan, Duchess of Sussex visit Chester Town Hall on June 14, 2018 in Chester, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex and this is her first engagement with the Queen. During the visit the pair will open a road bridge in Widnes and visit The Storyhouse and Town Hall in Chester. (Photo by Chris Jackson/Getty Images)
CHESTER, ENGLAND - JUNE 14: Meghan, Duchess of Sussex meets the public as she and Queen Elizabeth II walk from Storyhouse to Chester Town Hall on June 14, 2018 in Chester, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex. This is her first engagement with the Queen. During the visit the pair opened a road bridge in Widness, visited The Storyhouse in Chester ofllowed by the Town Hall. (Photo by Anthony Devlin/Getty Images)
CHESTER, ENGLAND - JUNE 14: Meghan, Duchess of Sussex meets members of the public as she joins Queen Elizabeth II to walk from Storyhouse to Chester Town Hall on June 14, 2018 in Chester, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex. This is her first engagement with the Queen. During the visit the pair opened a road bridge in Widness, visited The Storyhouse in Chester ofllowed by the Town Hall. (Photo by Anthony Devlin/Getty Images)
CHESTER, ENGLAND - JUNE 14: Meghan, Duchess of Sussex waves as she joins Queen Elizabeth II to walk from Storyhouse to Chester Town Hall on June 14, 2018 in Chester, England. Meghan Markle married Prince Harry last month to become The Duchess of Sussex. This is her first engagement with the Queen. During the visit the pair opened a road bridge in Widness, visited The Storyhouse in Chester ofllowed by the Town Hall. (Photo by Anthony Devlin/Getty Images)
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