Not many actresses willingly flaunt their bodies in their 40s, let alone after they've had a baby, but Nicole Kidman, 44, not only doesn't mind showing off her physique, she admits to even enjoying it. In an interview with W, the star of the upcoming HBO biopic "Hemingway & Gellhorn" opens up about going nude for movies, her most memorable sex scenes, and what brought her closer with her husband, country singer Keith Urban. When asked about her propensity for filming scenes in the buff, Kidman...