In 1967, she moved to New York and took an evening class in millinery at the Fashion Institute of Technology. Then she set up her hat business.
Patricia Underwood hats are sold in select department stores and boutiques throughout the United States, Europe, Japan and Australia.
In the middle 1990s she added coordinating scarves, shawls, and gloves to her collection. Her work is mostly ready-to-wear, available through department and specialty stores such as Saks Fifth Avenue and Bergdorf Goodman, and has her own in-store boutique in the latter. Additionally, Underwood continues to do custom work for a select clientéle and has expanded her horizons into Europe and Japan.
Hat designer Patricia Underwood creates unadorned, hand made, hand finished designs which rely on the most subtle understanding of shape, color and proportion for their effect.