According to a recent study of girls/women aged between 10 and 60 by Dove, only 20% of Australian women surveyed felt body confident and many who were not blamed unrealistic standards set by the media. You can read more at www.bodyandsoul.com.au.
Some important factors:

• As a country, we are getting bigger.  27% of 5-17 year olds are overweight and 63% of adults.  Therefore, the number of women and girls unhappy with their body is likely to increase with our expanding waist lines.  
• France introduced new laws late last year enforcing models to obtain a medical certificate stating that they had a minimum body mass index (BMI).  The laws also require magazines to identify photos where the model's silhouette has been edited.

What you can do:

• Read the Butterfly Foundations fact sheet about body image.
• Move more, sit less - the Australian Department of Health recommends that teens between the age of 13-17 engage in 60 minutes of moderate to vigorous activity per day.
• Eat well.  Check out www.betterhealthvic.gov.au Eating Tips for Teenagers.