Model Cheryl Tiegs is criticizing Sports Illustrated for featuring plus-size model Ashley Graham on one of the covers of their Swimsuit Issue, saying it promotes an unhealthy body image.

Graham’s appearance in the magazine was the first time a plus-size model was featured in the annual Swimsuit Issue. “I know my curves are sexy and I want everyone else to know that theirs are too,” Graham said earlier this month. “There is no reason to hide and every reason to flaunt.”

But Tiegs disagrees, blasting the magazine for “glamorizing” an unhealthy figure.

"I don't like that we're talking about full-figured women because it's glamorizing them because your waist should be smaller than 35 [inches],” Tiegs, who has been on the cover of Sports Illustrated several times, told E! News.

“That's what Dr. Oz said, and I'm sticking to it," she continued. "No, I don't think it's healthy. Her face is beautiful. Beautiful. But I don't think it's healthy in the long run."