Crystal Renn (born June 18, 1986 in Miami, Florida) is an American fashion model and author.
Renn started her modeling career in high fashion at the age of 14 after being spotted by a professional scout in her hometown in Clinton, Mississippi. Renn was told she would need to lose almost a third of her total body weight if she wanted to become a model. Later, after years of anorexia nervosa, Renn reassessed her diet and exercise habits. After gaining 70 pounds (32 kg) and re-emerging as a U.S. size 12, she was re-marketed by her agents as a plus-size model. Renn has authored a book, Hungry: A Young Model's Story of Appetite, Ambition and the Ultimate Embrace of Curves, about her experiences in the fashion industry in relation to her several body type transformations.