Teenage superstar Ashley Olsen has cancelled a promotional trip to Australia to spend time with her twin sister Mary-Kate.
Earlier this week, Mary-Kate Olsen entered a medical facility "to seek professional help for a health-related issue", according to her spokesman.
The 18-year-old girl is getting treatment for an eating disorder reported to be anorexia.
The Olsen twins have been in the public eye in the US since they were nine months old, initially starring in the TV sitcom 'Full House'.
Since then, they have sold millions of videos, DVDs and books and have launched their own fashion line.
The trip to Australia was to launch overseas promotion of their film, 'New York Minute', which also stars Eugene Levy.
