Being a princess comes with anumerous guidelines, but that doesn’t meanMeghan Markleis going to let that keep her from having fun in hernew role as the Duchess of Sussex.As she andPrince Harryattended their first engagement as amarried coupleon Tuesday in honor ofPrince Charles‘ 70th birthday, the new royal couldn’t help but laugh when a bee started buzzing around her new husband’s ear as he gave a speech.Harry tried to swat the insect away, and even had to interrupt his speech to declare, “Sorry, that bee really got me!”Dominic Lipinski/PA Wire“You have inspiredWilliamand I, and looking out here today it is clear to see that we are not alone,” Harry, 33, told the crowd at the garden party at Buckingham Palace. “You have created an incredible body of work that has and will continue to make such a huge difference to so many people’s lives both here and around the world. With that lady and gentlemen, please can I ask you to join me in wishing the Prince of Wales a very happy birthday, six months ahead of his birthday. How very royal.”The crowd laughed, and Harry went on talking. “So Pa, while I know that you’ve asked that today not be about you, you must forgive me if I don’t listen to you, much like when I was younger,” Harry continued as Markle, 36, smirked withCamilla Parker Bowlesand Charles. “And instead I ask everyone here to say a huge thank you to you for your incredible work over nearly 50 years.Tim Rooke/REX/ShutterstockCharles had equally kind words to say about his youngest son on Saturday during Harry and Meghan’slunchtime wedding receptionat St. George’s Hall at Windsor Castle.Want to keep up on the latest from PEOPLE?Sign up for our daily newsletterto get our best stories of the day delivered straight to your inbox.“It was very sweet actually, very heartfelt,” aroyal weddingguesttoldPEOPLE, adding that Charles mentioned “how proud” he was of the man his son had “grown into” during his speech. “He ended it calling him, ‘My darling old Harry, I’m so happy for you,’ which was very sweet.”

Being a princess comes with anumerous guidelines, but that doesn’t meanMeghan Markleis going to let that keep her from having fun in hernew role as the Duchess of Sussex.

As she andPrince Harryattended their first engagement as amarried coupleon Tuesday in honor ofPrince Charles‘ 70th birthday, the new royal couldn’t help but laugh when a bee started buzzing around her new husband’s ear as he gave a speech.

Harry tried to swat the insect away, and even had to interrupt his speech to declare, “Sorry, that bee really got me!”

Dominic Lipinski/PA Wire

Buckingham Palace garden party

“You have inspiredWilliamand I, and looking out here today it is clear to see that we are not alone,” Harry, 33, told the crowd at the garden party at Buckingham Palace. “You have created an incredible body of work that has and will continue to make such a huge difference to so many people’s lives both here and around the world. With that lady and gentlemen, please can I ask you to join me in wishing the Prince of Wales a very happy birthday, six months ahead of his birthday. How very royal.”

The crowd laughed, and Harry went on talking. “So Pa, while I know that you’ve asked that today not be about you, you must forgive me if I don’t listen to you, much like when I was younger,” Harry continued as Markle, 36, smirked withCamilla Parker Bowlesand Charles. “And instead I ask everyone here to say a huge thank you to you for your incredible work over nearly 50 years.

Tim Rooke/REX/Shutterstock

The Prince of Wales' 70th Birthday Patronage Celebration, Buckingham Palace, London, UK - 22 May 2018

Charles had equally kind words to say about his youngest son on Saturday during Harry and Meghan’slunchtime wedding receptionat St. George’s Hall at Windsor Castle.

“It was very sweet actually, very heartfelt,” aroyal weddingguesttoldPEOPLE, adding that Charles mentioned “how proud” he was of the man his son had “grown into” during his speech. “He ended it calling him, ‘My darling old Harry, I’m so happy for you,’ which was very sweet.”

source: people.com