Here is the info on the feather boa, info sourced from an older post on the Who Molested/Abused JonBenet thread written by Midwest Mama:
This is something I read recently in "Presumed Guilty" by Steven Singular
"I told Hunter that I had recently been contacted by a woman who had seen a picture of JonBenet, months before the murder, in her parents' bedroom in the summer residence in Charlevoix, Michigan, during a tour of Charlevoix's finer homes. The photograph, the woman said, showed JonBenet with a provocative expression on her face, wearing nothing but make-up and a feather boa snaking around her torso. The woman was so taken aback by the image that she had gone home, called one of her relatives in Denver, and given a detailed account of what she had just seen."