According to Us Weekly, a representative for Olsen explained that the actress continually battles anorexia.
Last week, the 20 year-old star made an appearance at the Golden Globe Awards, where several people noticed her slight frame. The actress seemed tiny in her dress. In 2004, the New York Minute star underwent treatment for anorexia.
A source said, "It’s an everyday struggle. It’s not something that goes away. She still works with her therapist to keep her in line."
Olsen’s representative explained, "Mary-Kate has not lost weight. She is taking good care of herself."