Other notable guests there to toast Prince Louis were Prince Charles and Camilla, Kate's parents Carole and Michael Middleton, her sister Pippa and her husband James Matthews, and hot bearded Middleton brother James.
After a busy week in Scotland last week, the queen faced another busy week ahead in London, including a meeting with visiting President Donald Trump and first lady Melania Trump on Friday.
Archbishop of Canterbury Justin Welby, the spiritual leader of the world's Anglicans, will lead the service at the Chapel Royal with close friends and family in attendance.
The six godparents are all family or friends of Their Royal Highnesses.
Those who met them said that they praised Belfast people saying that they were "so friendly and warm".
THE Duke and Duchess of Sussex will arrive in Dublin today for their first official royal engagement overseas as a married couple.
The 3-year-old looked angelic as she walked in holding hands with her dad, Prince William, and carrying what appeared to be a program for the church service.
Princess Diana's favourite flower was the white rose - leading many to think Kate was making a subtle nod to her.
The choice of designer is interesting considering Wickstead publicly called out the Givenchy and Claire Waight Keller wedding dress made of Meghan for being similar to her own dresses.
The cheeky pair, who welcomed little brother Prince Louis in April, were spotted at the window of Buckingham Palace watching the RAF 100 flypast at around 1pm. That gown was worn for all Royal Christenings, including The Queen, her children, and seven of her eight grandchildren.
Being the best big sister to Prince Louis she could be, little Charlotte made a decision to take a pamphlet from Prince Louis's christening with her as a souvenir.