Principal went on to star in various television films, some of which she produced through her production company, before stepping away to focus on her health and wellness projects.
In 2004, she received an honorary degree from 's Business School and gave the commencement address.
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Principal became a best-selling author, writing three books about beauty, skincare, fitness, well-being, and health: The Body Principal 1983 , The Beauty Principal 1984 , and The Diet Principal 1987.