Kate Middleton.Photo: Chris Jackson/Getty

Kate Middletonhad a heartfelt reaction when a fan paid her a meaningful compliment during anouting in Walesearlier this month.
On June 4, Kate, 40, andPrince William, 39, visited Cardiff Castle alongside their children,Prince George, 8, andPrincess Charlotte, 7, in honor ofQueen Elizabeth’s Platinum Jubilee celebrations. During the outing, the family chatted with well-wishers outside the castle.
In one sweet moment, a woman shook Kate’s hand and told her: “You’re going to be a brilliant Princess of Wales.”
Appearing very touched, Kate replied: “Oh, that’s very kind.”
Gesturing towards William, she added, “I’m in good hands.”
Kate, who received the title of the Duchess of Cambridge upon her wedding to William in 2011, will likely be known as the Princess of Wales (like her late mother-in-law, Princess Diana, before her) when William takes the title of Prince of Wales after his fatherPrince Charlesbecomes King.
The mother of three faces mounting public expectations as future Queen.
“Those who know her say there is a real core of strength, and she did set her mind to the job,” Sarah Gristwood, author of Elizabeth:The Queen and the Crown, previously told PEOPLE. “But at the same time, she’d have to be superhuman not to feel the pressure.”
The Cambridges.Ben Birchall/PA Images via Getty

As the future Queen raising a future King, Kate is expected to flawlessly fulfill multiple roles: princess, supportive spouse, hands-on mom, international bridge-builder, charity advocate, style icon and more.
“The future Queen is a role model to the U.K. but also to the world, which means all eyes are on you,” says royal etiquette expert Myka Meier, author ofModern Etiquette Made Easy. “The added pressure of having cameras everywhere to catch even the slightest eye movement makes everything she does a conscious effort. From the perfectly poised posture to the way she descends a staircase or gets out of a car—it is all carefully done.”
Prince William, Kate Middleton, Princess Charlotte and Prince George in Wales on June 4.PA Images / Alamy Stock Photo

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LikeQueen Elizabeth, Kate doesn’t let the pressure show. And she has found increasing confidence with her royal work, which has helped propel her forward.
“Catherine is the sort of woman who will take on whatever she needs to,” a close source tells PEOPLE. “If she needs to step up to the plate, she does it—and she always has.”
source: people.com