BackgroundBody dysmorphic disorder (BDD) is a mental health disorder characterized by an excessive preoccupation with perceived flaws or defects in one's appearance. This study aimed to assess the prevalence of BDD, identify the predictors of BDD, explore the associations of BDD with social anxiety and social phobia, and examine the effect of social media on BDD.MethodsIn this cross‐sectional study that was conducted between January and March 2023, Lebanese adult females completed an online survey that included questions about sociodemographic characteristics, cosmetic interventions, BDD, social media use, and Social Interaction Anxiety Scale (SISA‐6)/Social Phobia Scale (SPS‐6). The collected information was analyzed using descriptive statistics and regression analysis. Statistical significance was set at p value <0.05.ResultsA sample of 1048 were eligible for analysis and the mean age was 29.94 ± 10.01 years. It was shown that 141 (13.5%) participants were BDD positive. The results of the multivariable logistic regression showed that only females living in urban areas (aOR = 2.351 [95% CI 1.502–3.680], p < 0.001), unmarried (aOR = 1.672 [95% CI 1.041–2.684], p = 0.033), reporting higher social media use score (aOR = 1.526 (95% CI 1.401–1.661), p < 0.001), and higher SIAS/SPS score (aOR = 1.040 (95% CI 1.022–1.060), p < 0.001) were significantly positively associated with BDD.ConclusionThis study found a high BDD prevalence (13.5%) among Lebanese adult females compared with other regions and was associated with anxiety and increased social media platforms use. This highlights the need for a comprehensive approach in the assessment of BDD, along with preventive measures to address the negative impacts of social media on well‐being and promote healthy body image.