Before Meghan Markle drove the royal family to distraction, she frustrated coworkers on the Toronto set of “Suits.”

Years before she was the Duchess of Sussex, Markle gained a difficult reputation for holding up filming and photoshoots if everything wasn’t perfect or if she wasn’t getting enough of the spotlight.

“She was always having to be coaxed out of her dressing room during promotional shoots because she didn’t think she looked pretty enough, or her outfit wasn’t right or she felt she wasn’t getting prominent enough placement (in the promotional pictures),” a source on set told the Post while sighing. “There were always tears. Every time.”

Our source’s information jibes with an earlier report from the Daily Mail in which a videographer was warned, “People told me, ‘get ready because she is a lot.’ They used to call her ‘the princess.’”

“When I saw her, right away from the moment she arrived, I didn’t even know who she was and she was acting like a diva – It was the attitude, how she talked to people, the rules,” the videographer continued.

“She came in wearing a (baseball) cap, hiding her face and she had her head down and just walked back toward the make-up room. It was like it was the big diva coming in, and she doesn’t want people to see her, like you would do if you’re walking in the street and you don’t want the paparazzi to take your picture.”

The videographer wasn’t impressed, telling the Daily Mail, “Everyone thought, ‘she is acting like an A-lister when she is not even a D-lister.’”

Representatives for Markle did not respond to requests for comment.