(This church has its own significance for the royal family: it was where Charlotte's late grandmother, Princess Diana, was herself baptized.) Also at her christening, Charlotte's five godparents were officially named, including some of her parents' nearest friends and relative.
But the decision for them not to attend Louis' baptism at St. James's Palace in London was understood to have been mutually agreed by the monarch and the Duke and Duchess of Cambridge some time ago and was not health-related.
This was the first time the Duke and Duchess of Cambridge stepped out with all three children.More news: Dominic Raab is the new Brexit secretary
Prince Louis was christened today.More news: 'Come to Russia,' FIFA ambassador tells England fans
Princess Charlotte had a sassy message for photographers as she left her brother's christening on Monday: "You're not coming".
Many photos from Prince Louis' christening have emerged after the event was held on Monday.
Meghan Markle and Prince Harry attended Prince Louis' royal christening. People notes that she wore her hair parted down the middle with a blue headband, an unusual style for the tot that looked formal, yet adorable.More news: Prince Louis' Christening Photo Shows All the Royal Kids Behaving Perfectly