Story highlights Full-figured model Ashley Graham is on the front of SI's 2016 Swimsuit issue

She's the first plus-size model to make the cover

Former swimsuit model Cheryl Tiegs says the cover glamorizes an "unhealthy" body

(CNN) Former top model Cheryl Tiegs has thrown cold water all over the enthusiasm about Sports Illustrated's first plus-size swimsuit issue cover model.

Tiegs told E! that she thinks fashion's increasing acceptance of full-figured women sends a bad message, a clear reference to plus-size model Ashley Graham's appearance on one of three 2016 SI Swimsuit Issue covers.

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"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 -- herself a two-time SI cover model -- said Wednesday at the 13th annual Global Green USA Pre-Oscar Party. "That's what Dr. Oz said, and I'm sticking to it."

Graham is a "rookie" cover model but no stranger to the magazine.

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