This meta-analysis examined the effectiveness of stand-alone body image (BI) cognitive-behavioural therapy (CBT). Nineteen studies met inclusion criteria. The behavioural dimension of BI improves most after BI CBT while the investment dimension improves the least. Individuals with clinical BI disturbances improve more than do college student samples. Treatments addressing the attitudinal, behavioural, and perceptual components of BI are more effective than treatments addressing attitude and behaviour only. Therapist-assisted therapy is more effective than is self-directed therapy. BI variables improve somewhat more than do general psychological variables, while the latter show equivalent improvement. Finally, treatment gains are maintained at follow-up. More research is needed to better understand and treat the investment dimension of BI.