Hyperreactio luteinalis is a rare entity in which there is bilateral, benign, functional multicystic ovarian enlargement during pregnancy, which is most commonly seen in third trimester. This condition is usually innocuous and does not need any specific treatment. However, many a times, it is mistaken for ovarian malignancy and inadvertently operated upon. This is a case report of a 24-year-old female with a partial molar pregnancy associated with hyperreactio luteinalis who was followed up for regression of the same and normalization of beta human chorionic gonadotropin (hCG) levels.