A representative for Mary-Kate Olsen has slammed reports she has relapsed in her battle with anorexia after an appearance at a Golden Globe Awards after party last week. The 20-year-old star stunned onlookers by wearing a low-cut dress, which exposed her alarmingly-thin frame. Olsen received treatment for anorexia in 2004 and hired an eating coach to help her with her weight issues.

A source tells Us Weekly, "It's an everyday struggle. It's not something that goes away. She still works with her therapist to keep her in line."

Her representative rubbishes reports her client has suffered a relapse, saying, "Mary-Kate has not lost weight. She is taking good care of herself."

Another source close to Olsen blames her new hair color for the drastic change in appearance, adding, "The blonde hair she has now makes her look skinny."

(This news article provided by World Entertainment News Network)