The 11-week-old will be baptised by the Archbishop of Canterbury, the Most Reverend Justin Welby, in the palace's Chapel Royal.
Meghan's father Thomas Markle also weighed in on the baby debate, telling Good Morning Britain last month, "When she met Harry and she spoke about how much she loves him". Guests will be served slices of christening cake, which is a tier taken from The Duke and Duchess of Cambridge's wedding cake, which was designed by Fiona Cairns.
Prince Louis was born on April 23 and is fifth in line to the British throne.
Welcome (officially) to the world, little Prince Louis.
Prince William's heartfelt message to England squad after World Cup dreams end
He added: "It's time now to hold our heads high as a nation and be proud of each other". It has a slightly different feel for me, but it's nice to hear people enjoying it again.
The newly named Duchess of Sussex told one fan she misses her time on USA Network's popular legal drama "Suits". In the same year, Middleton and the Queen were once again seen laughing their hearts out while watching a children's sports event in Vernon Park in Nottingham.
British designer Wickstead, who's previously dressed both Meghan and sister-in-law Kate Middleton, made some pretty distasteful comments following the royal wedding, suggesting Meghan's Givenchy wedding gown all too closely resembled one of her own bridal designs.
After Meghan Markle confirmed her father Thomas won't attend the wedding, Prince Charles offered to walk the bride down the aisle. However, she did break out of the box by wearing an exaggerated knit headband, which was tucked into her low bun. According to the site, she also wore matching Manolo Blahnik suede pumps and a hat from Stephen Jones Millinery.
Prince George and Princess Charlotte holding onto their father Prince William\'s hands as they leave the chapel. We also love that sly smile that Prince William gives his daughter after her comments indicating this isn't the first time Charlotte's spoken her mind.