When Leslie Fremar walked into her 18th-century Katonah, New York, farmhouse for the first time, “I just knew that it was meant to be mine,” she says. Fremar is a powerhouse fashion stylist who counts Charlize Theron, Julianne Moore, Jennifer Connelly, Nicola Peltz, and more A-listers among her clients. Fittingly, this home was in desperate need of a makeover. “It was kind of a disaster, but I fell in love with it. It just had good vibes.” After asking Moore—a design aficionado whose own self-decorated New York City town house graced the November 2017 cover of AD—to help her determine the direction for her Tribeca loft, Fremar decided to go…