Genevieve Morton who modeled for Sports Illustrated and was on the cover did a completely nude calendar for 2017. In Sports Illustrated she had a painted on bikini.
In 1977? Cheryl Tiegs wore a see thru bathing suit and since then each issue would have see thru or the painted on bathing suits
http://www.fansshare.com/gallery/photos/11526878/genevieve-morton-sexiest-photo/?displaying
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