George was also christened in the Chapel Royal, but Charlotte was baptised at the Church of St Mary Magdalene in Sandringham.
It's been almost two months since little Prince Louis was born - one of the most exciting times for royal watchers, who waited eagerly to catch a glimpse of the royal baby and his parents, Prince William and Duchess Kate, on the steps of the Lindo Wing.
Just like his brother and sister, Prince Louis will be christened not long after being born.
A Kensington Palace tweet read: "The Duke and Duchess of Cambridge are very pleased to share two photographs of Princess Charlotte and Prince Louis, taken by The Duchess at Kensington Palace".
"The facility will be a 21st Century successor to the current DNRC official centre at Headley Court, which has always been supported by The Royal Family".More news: Kim Jong-un talks denuclearisation on visit to Beijing
Princess Charlotte is "obsessed" with bags and the colour pink, Prince William revealed.
The little prince, the younger brother of Prince George and Princess Charlotte, will be baptized in the Chapel Royal at St James's Palace.
Photos of Prince Charles and the Duchess of Cornwall visiting the centre were also shared.
In a sweet moment, Prince William talked about how his involvement in the organization earned him brownie points with his 4-year-old son, Prince George.