With a beauty harkening back to old Hollywood, Katherine Heigl – a onetime Sears catalog child model who later paid her dues as a decidedly less-than-glamorous slasher film victim – finally earned widespread acclaim for her role as Dr. Izzie Stevens on the award-winning medical drama “Grey’s Anatomy” (ABC, 2005- ). A frequent sight on “Most Beautiful People” lists, the statuesque actress proved to be versatile and talented in much the same manner as her “Grey’s” character – also a former model who had a long road to acceptance as a medical professional. In 2007, Heigl – who had previously