Everything from her wardrobe, to her relationship with her family and friends has changed. "She made it clear that he should appreciate him and bond more".
"There's a small group of us that check in with her and see how she's doing, but she's still the same person", Martin told People.
Royal protocol stipulates that female members of the royal family must not wear pants when in the Queen's presence.
Then there's her family.
While Meghan remains close to her mum Doria Ragland, who recently moved to the United Kingdom to be closer to her daughter, she's very publicly estranged from others.More news: Spurs coach Pochettino ruled out 4 stars from Liverpool tie
The life of a royal can be very lonely and the Duchess is experiencing that herself since she said Yes to Prince Harry.
"The beginning of marriages are not that easy, but to have that impetus of your own family being disloyal is awful and embarrassing", the source said.
Just months after her May wedding, another milestone was that of celebrating her birthday as a royal last August.
Taking to Twitter, Ms Markle wrote: "I am not candy coating anything anymore! The DUCHA- should be humane to our father who has given her everything... and this media crap can stop!"
"He was the one who was always there for her. Fake waves and smiles can stop. The duchA** can bow to the daddy".
Samantha continued with the comparison in another tweet as she hit back at one critic and proclaimed she had the right to express her feelings about Meghan. No one wants to spoil her marriage and marriage is not at issue. Trump said he could shoot someone and not lose votes.More news: 32 killed, 128 injured in attack on protesters
And while she has lost a lot of friends, at least she has gained a very loving husband!
In December of a year ago, Priddy spoke to the Daily Mail about the end of their friendship. "If our father dies I'm holding you responsible, Meg", Grant wrote.
"Charles showed so much love towards Harry and Meghan, and I think Harry will be eternally grateful to his papa for stepping in and giving Meghan's hand in marriage", a royal insider revealed. 'The way she handled it, Trevor definitely had the rug pulled out from under him.
A source recently spoke to People about the rule, and Meghan's gripe with it. Despite not announcing the trip via Kensington Palace as it was a personal trip on her own, the news still broke and soon, details of what she watched - and drank - on the Air Canada flight were reported, although Mulroney earned her stripes as Markle's most trusted confidante as any details of what they got up to in Canada are still under lock and key.
As for her British-based friends, it's believed she's trying to forge bonds with Amal Clooney and Victoria Beckham.
"It's this shutdown mechanism she has".More news: Australian newspaper somehow doubles down on controversial Serena Williams cartoon
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