This anomaly represents a double upper lip, seldom in combination with a double lower lip. When the patient smiles, the lip is being divided by a transverse groove into two borders. The redundant tissue or hypertrophic mucosa can be surgically removed with good cosmetic results and function. Double lip is mostly inherited but can also be acquired through a traumatic injury. A combining of the aforementioned anomaly with the occurrence of both blepharochalasis and thyroid enlargement often indicates a case of Ascher's syndrome.