Depends on your definition. While the West often focuses on the age, the Japanese focuses on looks and mostly the face.
Outside anime what Japanese refers to as oppai loli or as they say ロリ巨乳 are well-endowed >loli-faced< women.
The girls are
Hestia: goddess / X00 million years old / 140cm tall
Ilulu: dragon / 16 years old / 130cm tall / 130cm oppai
Uzaki: human / 19-20 years old / 145cm tall
Shamiko: human-demon / 15-16 years old / 140-145cm tall
Outside anime what Japanese refers to as oppai loli or as they say ロリ巨乳 are well-endowed >loli-faced< women.
Hestia: goddess / X00 million years old / 140cm tall
Ilulu: dragon / 16 years old / 130cm tall / 130cm oppai
Uzaki: human / 19-20 years old / 145cm tall
Shamiko: human-demon / 15-16 years old / 140-145cm tall