And she's also now one of the most scrutinised, with her every move and outfit picked apart during every public appearance.
"We spotted this attractive, woman with a familiar air outside the entrance to the private residence where Harry & Meghan live", she wrote alongside the snap.
Taking to Twitter, Samantha 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! "The ducha- can bow to the daddy".
This week, Peoplemagazine headlines its cover story on Meghan with "Grace Under Pressure".
"Meghan has lost touch with some of her close friends from before the wedding, which has been tough", People's source says. I know her smile. "But she doesn't stray too far from her technique, she's very formulaic with her routine", said Martin.
Meghan's mom Doria fuels royal baby rumours
Though Meghan was undoubtedly showered with gifts once she and Harry returned to the palace, she reportedly wasn't allowed to keep many of them.
She was written out in the finale of the seventh series when her character got married, which aired in April 2018 - just before she got married herself. She's also being guided by Amy Pickerill, her assistant private secretary. For the sunny summer wedding, Meghan wore a navy Club Monaco dress and a matching fascinator, while her husband coordinated by pairing a royal blue vest and light blue tie with his traditional morning coat and gray striped pants.
"I don't believe she gave him enough of an opportunity". They said: "That wasn't HRH Meghan".
Meghan's relatives have continued to defy royal protocol by giving interviews after the Duchess' dad Thomas Markle pulled out of attending her wedding.
"We saw there was the lovely interaction between her and Camilla and Charles", Arbiter tells 9Honey. Chris Jackson/Pool via REUTERS Group shot: The family snap with Meghan centre stage.
Then there's her family.
But Meghan's big day wasn't actually all about her.