August 1957 is the oldest Playmate to date, appearing in her shoot at the age of 36.
In addition, Anniversary Playmates are usually chosen to celebrate a milestone year of the magazine.
Margie Harrison January 1954, June 1954 and May 1955, February 1956 are the only other women to appear more than once as Playmates.
Katherine Ryan and her husband Bobby Koostra dressed up as The Incredibles alongside children Freddie and daughter Violet, 12, who she had from a previous relationship.