Archbishop of Canterbury Justin Welby administered the holy sacrament in a 45-minute service on Tuesday evening at the palace's Chapel Royal with her fiance, Prince Harry, by her side, United Kingdom media outlets reported, quoting the Daily Mail.
The now 38-year-old will marry Prince Harry in May, however, it's understood she won't be bestowed the title of Princess but, instead, be known as the Duchess of Sussex, apparently. "And Meghan said she would like to see me on TV when I become an actress".
According to People, Markle took part in a baptism ceremony on Tuesday evening, which means she's now officially a member of the Church of England.
She attended a Catholic school in Los Angeles but is Protestant.
Greeted first by crowds, Markle and her royal beau marked International Women's Day with a visit to the Millennium Point complex where they met with Stemettes, an organization that supports girls and young women in STEM-related fields.
Speaking to the BBC shortly after, Sophie explained: "Meghan told me that I can achieve whatever I want to achieve".
He added that he's "looking forward" to the couple's wedding which will take place at St. George's Chapel at Windsor Castle. Later on, the couple joined one of the Royal Foundation's pet projects, Coach Core, which provides coaching sessions in Birmingham, teaching people between the ages of 16 and 24 everything from boxing to basketball.
It's easy to say that this was a moment crafted for the world's cameras by a royal PR team who clearly know what they're doing.
The royal bride to be - who will marry Prince Harry in May - uses her burger flipping skills to turn up the heat in a saucy-as-hell video for men's magazine Men's Health.