Mary Duffy is a feminist fashion expert, spokeswoman, entrepreneur, author, and motivational speaker who has worked to expand the concept of beauty for the majority of women who do not fit the ideal stereotypes popularized by the entertainment and fashion industries. She expanded the first model agency specializing in plus-size models and petites. Her career has included multiple television appearances, fashion shows, seminars, and print media interviews, as well as two years each on QVC and HSN. She also had a ten-year plus-size pattern line for Simplicity Patterns, designed three other fashion lines, and authored several books.