The proof comes from the 36-year-old actress' 1999 yearbook from Immaculate Heart High School in Los Angeles, California.
In her class photo, Markle is seen in her school uniform with her brunette hair worn down as she gives a grin for the cameras. For her yearbook quote, she chose an empowering message from former first lady Eleanor Roosevelt, which reads: "Women are like tea bags; they don't realize how strong they are until they're in hot water."
In another more candid pic from her yearbook, Prince Harry's fiancee is again seen with her hair down and smiling from ear to ear for the camera. The caption for the photo reads: "Classy Girl!"
Markle was raised on the West Coast with her parents, Thomas Markle and Doria Ragland, and later moved to Toronto, Canada, to tape Suits.
“It was the late '70s when my parents met. My dad was a lighting director for a soap opera, and my mom was a temp at the studio," she shared with Elle UK. "They moved into a house in the valley in L.A., to a neighborhood that was leafy and affordable."
After Harry and Markle announced their engagement earlier this week, the bride-to-be's parents released their own statement expressing how excited they were for their daughter.
"We are incredibly happy for Meghan and Harry. Our daughter has always been a kind and loving person," they said. "To see her union with Harry, who shares the same qualities, is a source of great joy for us as parents. We wish them a lifetime of happiness and are very excited for their future together."