The christening will take place on July 9, a date likely chosen because the Duke and Duchess of Cambridge's children are off school - George finishes a week before and Charlotte will be off for summer break.
Louis was born at the Lindo Wing of St Mary's Hospital in London's Paddington, on St George's Day.
It is modelled after the wedding dress Queen Victoria wore for her marriage to Prince Albert in 1840, a year before the birth of their first child.
Louis' ceremony will be performed by the Archbishop of Canterbury, the Most Reverend Justin Welby, who's been the main dude for the royals since he became the principal leader of the Church of England in 2012. It's the same spot that Prince George had his big day - although Princess Charlotte's was at the Church of St Mary Magdalene in Sandringham. Her husband Nick Pettman, who works in the City, will also be at the christening, as will the spouses of all the godparents.
Canadian senate passes weed bill but legalization delayed
When asked if the government is considering amnesty or pardons for people who have criminal records for marijuana crimes, Ms. Canada has become the second country to legalise recreational marijuana nationwide and the first G-7 country to do so.
As of Wednesday, we know what's next up on the royal schedule that'll draw the family together once again: Prince Louis's christening.
And ahead of Prince Louis' baptism next month, a very special connection to Meghan has been revealed. Up next on Louis' royal roster of events is his christening, which will see the Cambridges and their Royal Family out in full force to celebrate their new member. Understandably, the gown had some wear and tear, so babies since then have used a replica commissioned by Queen Elizabeth, pictured below on Princess Charlotte.
According to BBC News, guests at the christening will be served a slice of William and Kate's wedding cake, a fruit cake designed by Fiona Cairns.