Overgrowth of keratinized gingival tissues is a common condition and is described under a variety of names. Causes of such enlargement can be medications, hereditary, and/or local irritating factors. Hereditary gingival fibromatosis is a rare condition that can occur as an isolated disease or as part of a syndrome or chromosomal abnormality. In severe cases, the gingival enlargement may cover the crowns of teeth and cause severe functional and aesthetic concerns. Here, we present a case of an 8-year-old girl with severe enlargement of gums in the maxilla and mandible. The diagnosis was made based on clinical examination and family history.