The 38-year-old quit her acting job to become a full-time royal, but there was speculation she could return to the show - which is now broadcasting its last season - in a cameo role.
Making a comeback in episode five, Mike chats to fellow cast members who ask how Rachel's doing.
While Meghan hasn't been able to make the reunion, the Suits writers have made sure there's a little tribute to her and her new royal life.
In the show, Mike and Rachel were seen getting married before the characters moved to Seattle.
Another agreed and said: "We know, she's married to our UK Prince Charming".
Want more lifestyle and celebrity news? "That's insane! I bet in a million years she never thought she would be part of that family".
Meghan with her on-screen husband in Suits, Patrick.
Describing how the show is keeping Rachel in the loop, Patrick told Entertainment Tonight: "For Mike this is just a trip to NY. We were very, very fortunate to have that sort of longevity on a series", she said, adding, "I've ticked this box, and I feel very proud of the work I've done there, and now it's time to work with [Harry] as a team". Thank you for joining me on this adventure!