She said; "Meghan can not have whatever she wants".
Prince Harry and Markle Wednesday in May in a stunning ceremony held in St George's Chapel 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.
A new book by reporter Robert Jobson claims Harry told staff ahead of their royal wedding day on 19 May: 'What Meghan wants, Meghan gets'.
While their May 19 nuptials at St. George's Chapel were rife with handsome moments - from Prince Harry's sweet "wow" when he caught sight of his bride for the first time to Prince George consoling an upset bridesmaid - her walk down the aisle really took the cake.
"The message from the Queen was very much Meghan needed to think about how she speaks to staff members and be careful to follow family protocols".
Meghan eventually wore a diamond and platinum headpiece which was chosen by the Queen.
"When it came to the tiara on the day, I was very fortunate to be able to choose this gorgeous art deco style bandeau tiara", Meghan said in an audio recording for the "Relive the Royal Wedding" exhibition at Windsor Castle.
The queen also asked why Meghan would need a veil given this would be her second wedding.
The royal weddings were the only exceptions to the 6pm rule, and at all other times we've seen Kate in a tiara have been after dark for formal occasions such as official state dinners and balls. She has very high standards and is used to working in a Hollywood environment.
"Meghan can be hard", the source said.
Prince Charles walked Meghan down the St. George's Chapel aisle. In the duchess's case, it was expected to be one lent to her by the Queen.