She was recently seen sticking out her tongue at photographers while arriving at Prince Harry and Meghan's wedding in May.
The little prince got the usual royal treatment with a whopping six godparents and a whole host of high profile royal guests in attendance including aunt and uncle the Duke and Duchess of Sussex, all of his mum Kate's family as well as Prince Charles and Camilla, Duchess of Cornwall.
It's days like today that make being a mom so special for Kate Middleton.
PRINCESS Charlotte issued a cheeky remark to royal snappers as she stole the show for the second time today at Prince Louis' christening.
It was also revealed Monday that the Duke and Duchess had chosen two hymns, two lessons and two anthems for the christening.
Royal expert Richard Fitzwilliams even predicted to the site that "emphasis could be firmly be on their close friends" when making the decision, as the couple did not choose any Royal Family members to be Princess Charlotte's godparents in 2015 and did not choose any immediate family members to be Prince George's in 2013.
Divers begin final push to rescue remaining boys, coach in Thailand cave
Twelve boys and their coach were stranded when they went exploring the Tham Luang Nang Non cave after a practice game on June 23. Tracy also noted that the glimpse we've seen of the trapped boys showed they appeared to be in good spirits.
The 11-week-old Prince wore the Honiton lace and white christening robe that was also worn by Prince George and Princess Charlotte.
Prince Louis of Cambridge's christening this week was steeped in tradition - from his elaborate gown to the lily font that's been used in the baptism of royal babies for nearly 200 years.
It is the first time the Duke and Duchess of Cambridge and their three children have been seen together as a family of five.
Lucy Middleton: She is the Duchess of Cambridge's cousin and a solicitor.
They include Guy Pelly, once dubbed the "court jester" to William and Harry for his wild ways that were often cited as a bad influence on the brothers in their youth, running their favourite drinking haunts.
George, four, and three-year-old Charlotte held William's hand, as a sleeping Louis was carried into the chapel by Kate.