The fourth heir to the throne, Princess Charlotte, is known to tug at the heartstrings wherever she goes, and her brother's christening was no exception.
From the video clip shared on Kensington Palace's Twitter account, the adorable Princess can be seen greeting the Archbishop of Canterbury before heading inside.
As reported by Daily Mail, Prince William guided her through the process by telling her to shake the Archbishop's hand, and then commended her with a "well done."
After the service, Charlotte was also seen waving at reporters and guests and is already very confident with the press albeit being only three years old. Read more on our Twitter, @amomama_usa
Prince William held on to both Princess Charlotte and her 4-year-old brother, Prince George, before guiding them into the chapel
She was dressed in a blue-patterned dress for the special occasion, with blue shoes and white socks while Prince George wore a white shirt and a pair of dark grey shorts.
Another charming moment was when the young Princess looked back at the Archbishop, or more specifically, his colorful robe!
Unlike Prince Louis, Princess Charlotte was christened at Sandringham's St. Mary Magdalene Church in Norfolk. It's the same church where the late Princess Diana was christened, according to People.
Prince George was baptized at St. Jame's Palace Chapel, like his brother. It's the same Chapel where Duchess Meghan was baptized back in March.
Princess Charlotte also gave a cute little wave to reporters gathered outside the hospital's Lindo Wing where Catherine gave birth to Prince Louis eleven weeks ago.
At the Trooping The Colour Festival last month, Prince Charlotte was spotted on the Buckingham Palace balcony clapping her hands but stopped to copy the Queen as she waved to spectators.
Source: Getty Images
The hymns O Jesus, I Have Promised and Lord of All Hopefulness were sung at Prince Louis' service while two of his godparents did a reading as well.