The actress, who recently returned to Canada to film the legal drama Suits after a brief visit to see Prince Harry in London, wrote: "Sending extra love to Emily, Sol, Domi, Hannah, Sih, Doris, Jessy Scarlett and all of you who have been so supportive. I've missed you guys." She added a quote with the message which read: "Be the change you wish to see in the world."
Fans were quick to respond to the sweet message, with one writing: "Thank you for being you and such an amazing role model for all of us."
"Love the quote, Love the show. You're beautiful," another added.
Meghan thanked fans for their support on Twitter
The fifth-in-line to the throne released a statement shortly after it was confirmed that the pair were dating, revealing the depths of the "abuse and harassment" the actress had received after their relationship became public knowledge.
The heartfelt statement read: "The past week has seen a line crossed. His girlfriend, Meghan Markle, has been subject to a wave of abuse and harassment. Some of this has been very public – the smear on the front page of a national newspaper; the racial undertones of comment pieces; and the outright sexism and racism of social media trolls and web article comments.
"Some of it has been hidden from the public – the nightly legal battles to keep defamatory stories out of papers; her mother having to struggle past photographers in order to get to her front door; the attempts of reporters and photographers to gain illegal entry to her home and the calls to police that followed; the substantial bribes offered by papers to her ex-boyfriend; the bombardment of nearly every friend, co-worker, and loved one in her life."