She went on to tell the Guardian that, after some unspecified bad experiences, she now goes to costume fittings "terrified" and "prepared to be told something unkind."
"[It] was just horrible," Jessie recalled of an occasion where a costume director grabbed her stomach. "And I laughed. You're like: 'Oh, you're hurting me. Actually, it's fine.'"
When asked if she's considered "giving into the pressure" to lose weight in order to land roles, Jessie said: "I've definitely considered losing weight — and when I have lost weight, I tend to get a part."
"I mean, it's not rocket science," she said. "But I eat healthily, I'm a normal-sized woman, and I'm still regarded, probably, as a fat actress.
"I've just kind of stayed on the quirky path," she added. "And that's fine."