Amy Biviano, the Democratic challenger in a high-profile battle for a legislative seat representing Spokane Valley, is defending a 1995 topless photo shoot with Playboy magazine as a confidence-building experience while attending Yale University. In an interview Friday, following a conservative website’s disclosure that Biviano appeared in a “Women of the Ivy League” edition, Biviano said she doesn’t regret the photo shoot but wouldn’t do it again as a mother. “It was one of the youthful college kinds of things. I was interested in pushing my limits,” Biviano said in an interview Friday. “This was my small act of rebellion.”...