Prince Harry and Markle Wednesday in May in a stunning ceremony held in St George's Chapel at Windsor Castle.
As a result of her pregnancy, Meghan's duties were slightly cut back during the couple's recent royal tour to Australia, New Zealand, Tonga and Fiji.
Meghan spoke about her choice of tiara as part of A Royal Wedding exhibition at Windsor Castle.
A source has told The Sun that she originally wanted a tiara that featured emeralds but they were told she couldn't have it because they weren't certain where it came from.
The royal insider however said the Queen wasn't having a bar of it and told Harry "she gets what tiara she's given by me".
Recently, there were a few reports that before their wedding, Harry told the Royal staff that Meghan gets what she wants.
Prince Harry and Meghan Markle have had a whirlwind last 6 months.
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"There was a very heated exchange that prompted the Queen to speak to Harry".
Meghan eventually wore a diamond and platinum headpiece which was chosen by the Queen.
However, the Queen then asked to see Harry "privately" and "put him firmly in place", according to Mr Jobson.
Apart from this, the Royal Family members also had an issue with the way Meghan treated the Royal staff.
Meghan apparently did not understand the staff of the Royal family had to be treated with a certain amount of respect and gratitude.
The Queen is also believed to be unhappy over the decision to wear a veil for the wedding, given it was Meghan Markle's second wedding. The Duke of Edinburgh won't be attendance, but it will be the first time the Duchess of Sussex has attended. She has very high standards and is used to working in a Hollywood environment. After the wedding Meghan was given the title of Duchess of Sussex by the Queen.
The insider added: "Meghan can be hard".