As others have posted, Jayne is hardly a trendy, "kreatyve" spelling of the more standard Jane. It has been in use since at least the early 1900s and probably before that. No doubt its use has been influenced by the last names Jayne or Jaynes. While some may disapprove, it's likely that some may use this spelling as a way to honor a male relative (Jay perhaps), which would be a perfectly understandable impulse. Jayne Mansfield may have influenced some parents to give this name as an alternative to Jane. But there is some evidence that the names used by Hollywood sexpots actually DECLINED in use after the bearers of said names achieved fame (or notoriety). Marilyn did not remain a popular name after the 50s, and Mae or Mamie may only now be beginning a comeback.