“He has the business acumen; she has the talent required to create a two-billion-dollar global fashion brand. Together, Patrizio Bertelli and Miuccia Prada are the most successful husband-and-wife pairing in fashion. But as another IPO looms, can Bertelli ensure that his family-focused company will be fourth time lucky?”  Check out this fascinating story about the Prada Empire from the WSJ.com.