Gorgeous and voluptuous brunette knockout Crystal McCahill was born on December 18, 1983 in River Forest, Illinois. She's the daughter of Gale Olson, who was the Playmate of the Month in the August, 1968 issue of "Playboy." Crystal has six brothers and sisters. She started competing in beauty pageants at age nine. McCahill was discovered at a Hooters restaurant by Holly Madison and Bridget Marquardt and was a finalist in the 55th Anniversary Playmate Contest. Crystal was chosen to be the Playmate of the Month in the May, 2009 issue of "Playboy." Crystal has appeared as herself on several episodes of the reality TV series "The Girls Next Door."