In recent years, philosophers have offered illuminating accounts of important dimensions of our interpersonal lives, such as love, care, trust, loyalty, and friendship. However, they have been surprisingly silent on the related though distinct phenomenon of being supportive. Concentrating on "thick" interpersonal relationships between adult, able-minded persons (e.g., close friendship, marriage, the relationship between parent and adult child), I offer a normative account of the stance and practice of being supportive. I then explore the special case of supporting an intimate in their self-expressive project(s), and argue that support can play an important role in encouraging both autonomy and solidarity.