Doherty, who joins the Hawaii-set NBC drama North Shore as Brooke Burns's long-lost half-sister Alexandra Hudson, has a simple beauty philosophy. "I believe in being subtle. I love the whole natural dewy look. I never use powder," Doherty, 33, told InStyle. "Whatever oil my skin produces is good for me, so I don't want to clog up the pores any more than I have to."