Prince George and Princess Charlotte steal the show at another wedding: All the adorable photos

Prince George and Princess Charlotte made their third march down the aisle in the last few years on Saturday (Sept. 22) for Kate's dear friend Sophie Carter, who tied the knot with Robert Snuggs at St Andrew's Episcopal Church in Norfolk, where the Cambridges have their country home. Prince William and Kate's eldest son was pageboy while their daughter took another turn as bridemaid, clad in a pretty floral crown like her mom. The Middleton family was also on hand for the festivities, including Carole, Michael and James, though pregnant Pippa sat this one out. While Prince George stole the show with his hilarious marching antics and funny faces, Charlotte seemed sweetly calm in the arms of her mom and the bride. Click through to see all the best photos from the Cambridge family's big day out...

Photo: © Mark Stewart Photography Ltd

Sophie and Robert posed with their adorable bridal party under an arch of greenery and flowers, with Sophie holding her goddaughter Charlotte in her arms. Sophie has a special relationship with Kate, with whom she's been besties for years, and the two have been spotted together in the stands at Wimbledon.

Photo: © Mark Stewart Photography Ltd

Cheeky Prince George stuck out his tongue at the photographer from behind a fellow attendee, clad in his adorable blue and white pageboy outfit.

Photo: © Mark Stewart Photography Ltd

At one point Prince George started marching, much to the amusement of their mom Kate, who is still finishing up her maternity leave after giving birth to Prince Louis. It's believed that the third Cambridge kid was at home with his nanny Maria Teresa Turrion Borrallo.

Photo: © Mark Stewart Photography Ltd

Prince George looked back at the camera as he held onto mom Kate's hand.

Photo: © Mark Stewart Photography Ltd

Princess Charlotte was not impressed with Prince George as he goofed around for the camera to the delight of his fellow pageboys. The little girl scowled at her big brother.

Photo: © Mark Stewart Photography Ltd

The Duchess of Cambridge opted for a gorgeous cornflower blue coat dress by Catherine Walker, which she paired with a stunning oversized floral headband. The rose-adorned topper by Juliette Botterill Millinery, which retails for $730, called the mind the floral headpiece she wore to Prince Louis' christening earlier this year.

Photo: © Mark Stewart Photography Ltd

Happily chatting with fellow guests, Prince William looked dapper in his three-piece morning suit, which featured charcoal pants, a light grey vest and black jacket. He wore a small white flower on his lapel.

Photo: © Mark Stewart Photography Ltd

Rupert wore a navy and blue morning suit with a white flower on his lapel, while his bride looked stunning in a halter gown with a lace jacket on top.

Photo: © Mark Stewart Photography Ltd

The duchess shared a special moment with groom Rupert outside the church following the ceremony, as she planted a congratulatory kiss on his cheek.

Photo: © Mark Stewart Photography Ltd

The pageboys, including five-year-old George, wore white collarless double-breasted shirts with blue linen short pants and white tights and penny loafers.

Photo: © Mark Stewart Photography Ltd

Princess Charlotte gave the camera the sweetest smile while in her mom's arms.

Photo: © Mark Stewart Photography Ltd

Sophie held up her skirt as she walked holding her husband's hand outside the church in Norfolk, looking every inch the beautiful bride.

Photo: © Mark Stewart Photography Ltd

Prince George was pointing something out to his little friends and fellow pageboys.

Photo: © Mark Stewart Photography Ltd

Princess Charlotte wore a pretty white dress with a ribbed bodice and ruffled collar piped in blue and puffy short sleeves. The three-year-old also wore a floral crown, which she'd done before at her aunt Pippa Middleton's wedding last year.

Photo: © Mark Stewart Photography Ltd

Prince George was not impressed by whatever he saw!

Photo: © Mark Stewart Photography Ltd

Sophie, who looked stunning in a classic white headband, lace-edged veil and white gown with a scalloped lace jacket, is one of Princess Charlotte's godmothers. William and Kate's middle child was clearly comfortable in her arms as her brother smiled sweetly for the camera.

Photo: © Mark Stewart Photography Ltd

What a cutie!

Photo: © Mark Stewart Photography Ltd

Prince George hammed it up between photos!

Photo: © Mark Stewart Photography Ltd

In a particularly sweet moment, little Charlotte snuggled up to the bride, Sophie Carter, in a group photo with family members and the bridal party.

Photo: © Mark Stewart Photography Ltd

The little prince looked unimpressed by the cameraman!

Photo: © Mark Stewart Photography Ltd