McClintock had celebrated her 50th anniversary in the business in 2020. In addition to her designs being featured by a variety of retailers, McClintock also had a network of self-owned domestic retail boutiques. She retired at age 83 in 2013, though her brand and legacy continue on. She and her son, Scott McClintock, also created a self-titled environmental foundation to support global environmental causes in 2018.
McClintock has dressed many celebrities, including Sissy Spacek and Hillary Clinton, who wore one of McClintock's designs in her 1975 wedding to Bill Clinton.