The Children’s Body Image Scale (Truby & Paxton, 2002) is a simple pictorial representation of body size perception. Each body figure represents a body shape based on measured body mass index (BMI) across standard BMI percentiles for pre-pubertal boys and girls. The Children’s Body Image Scale is designed to be administered in-person to children aged 7-12 years. It is free to use in any setting. This chapter first discusses the development of the Children’s Body Image Scale, provides details of its psychometric qualities and how to use it in a practice or research setting. Internal consistency reliability and test-retest reliability are described including updated versions that align with changes to international percentile for body mass index. This chapter provides the Children’s Body Image in its entirety, instructions for administration, the item response scale, and the scoring procedure. Measures of cognitive and behavioral body image validated for use in this age group should be utilized in conjunction with the CBIS to obtain a comprehensive assessment of body image. There are various formats available, including images with a face that has Caucasian or Asian features and one with blurry features. Logistics of use, such as permissions, copyright, and contact information, are provided for readers.