Daughter of 1970s teen idol David Cassidy and granddaughter of Broadway legend Jack Cassidy, Katie Cassidy was modeling for Abercrombie & Fitch in high school and recorded a cover of her father's song "I Think I Love You" before she made her acting debut in a 2003 episode of the cop drama The Division. Katie then went on to star in two classic … Join Mr Skin to read her entire Biography