She took particular issue with the fact that none of the Markle family were invited to the "fake" christening, going so far as to say she was "surprised the church didn't catch fire" when Meghan stepped inside.
However, in 2013, Queen Elizabeth amended the rule and granted titles to all of Prince William and Kate Middleton's children, but she didn't do the same thing for the children of Prince Harry, who is officially His Royal Highness Henry Charles David Duke of Sussex and the sixth in line to the throne.
While that was a sweet enough gesture, Markle also included a lovely handwritten letter, showing off her flawless calligraphy, on Prince Harry and Markle's monogrammed stationary.
"The reason I was drawn to Smart Works is that it reframes the idea of charity as community, which, for me, is incredibly important: it's a network of women supporting and empowering other women in their professional pursuits", Meghan wrote in the issue.
The new mum, 37, hand-picked the female-run business to feature in the September issue of British Vogue she guest edited in secret.
The multi-talented royal is also no stranger in the kitchen, having included recipes on her now-defunct lifestyle blog, The Tig.
And it's unlikely that the royal couple would go to such lengths to dress everyone up and pose for "photoshopped" images of a christening Samantha seems to be claiming never took place.
Thomas Markle, 75, has previously spoken of his disappointment at not being able to witness Archie's christening in person.
On the podcast "Royals, " royal commentator Angela Mollard talked about Archie's relationship with the heir to the throne after host Rebecca Hyde asked her a question. Stay tuned to Pinkvilla for more updates. "And we are also very good friends with Naomi Campbell", she recalled.
Skincare expert Sarah Chapman, high-end breathing retreats and some of her favourite ethical designers all get a shout out within the glossy pages.
More recently, the Sussexes' choice to obstinately refuse to share certain details about their life (such as the name of their dog, announcing when Meghan went into labour or son Archie's birth certificate) have baffled and infuriated vast segments of the United Kingdom population and royal watchers worldwide.
Meanwhile, Markle's half-brother, Thomas Markle Jr., recently made headlines after he said that the "Suits" alum will fall out with her mom next.
Meghan also hopped in the kitchen to bake banana bread for an engagement in New South Wales on her and Harry's Australia tour previous year.
So what will Meghan's birthday post look like?