It has been reported that Markle had her confirmation following the service, meaning she will be able to join her future husband at Holy Communion if she desires.

The ceremony took place in the Chapel Royal at St. James’s Palace in London. (Photo: Getty)

The water that was used for the baptism was said to have come from the royal family font.

The baptism, which formally introduces Markle into the Anglican faith, was not required in order for the soon-to-be royal to marry in church, but it is understood it was something she was keen to do.

Though Markle attended a Catholic school, she is actually a Protestant. And she’s not the first royal bride to have a pre-wedding religious ceremony. Following her engagement, Middleton was also baptized before having a private confirmation.

The Chapel Royal at St. James’s Palace was the setting for Prince George’s christening, and was the where Princess Diana’s body lay before her funeral.

Prince George was also baptised in the Chapel Royal, St. James’s Palace. (Photo: Getty)

News of the secret baptism follows reports that Markle also celebrated her bachelorette party over the weekend. It is thought the 36-year-old former Suits star spent the day getting pampered with her closest friends at a secret spa location.