BACKGROUND Bilateral pneumothoraces after cosmetic breast surgery are rare and sporadically reported in the literature. METHODS A 65-year-old female patient developed bilateral pneumothoraces after bilateral breast reduction surgery. Emergent chest tube thoracostomy was performed on both sides. The chest drains were removed on the fourth day (left side) and sixth day (right side), and the patient was discharged after 7 days of hospitalization without any further complications. CONCLUSIONS To our knowledge, the English-language literature contains no other reports of bilateral pneumothoraces after reduction mammoplasty.