CHICAGO — Claire's Stores has announced that Eugene Kahn , the company's CEO, has resigned. The company said its board of directors will conduct a search for a new CEO and will consider both internal and external candidates for this position. In the meantime, James Conroy , president of Claire's Stores, and Jay Friedman , president of Claire's North American Division, will form an interim office of the CEO, reporting to the board of directors. All of these management changes are effective immediately.