The October weather has the stylist Adi Heyman reaching for belted trenches and voluminous shirtdresses. These choices denote her “mod” style — though in this case, it has nothing to do with the ’60s. Ms. Heyman’s “mod” stands for modest, and it reflects her faith as an Orthodox Jew.

Ms. Heyman, 31, is the creative force behind the Jewish lifestyle website Fabologie, which, she said, draws 75,000 to 100,000 page views a month. Many of her admirers are Orthodox women looking to assert personal style while remaining true to the tenets of tznius, or modesty. But the size of her following reflects an appeal to women of all backgrounds who are drawn to dressing with more decorum and less flash.

The blog features posts on runway trends and photographs of style icons like Miroslava Duma, a fashion writer from Russia, and the socialite Olivia Palermo, both of whom are known to often dress conservatively.

She also shares reflections on Torah portions and Jewish holidays, frequently connecting them back to fashion. Last Passover, she advocated accepting the difficulties of the past to help fuel growth in the future.