Sweet 20 (Vietnamese: Em là bà nội của anh; lit. 'you are my grandmother') is a 2015 Vietnamese fantasy romantic comedy film directed by Phan Gia Nhat Linh and starring Miu Le, Ngo Kien Huy, Hua Vi Van, Minh Duc, Thanh Nam and Hari Won. The directorial feature debut of the director, the film is a remake of the 2014 South Korean film Miss Granny (2014). It was released in Vietnam on December 11, 2015. It became the highest-grossing Vietnamese film at the Vietnamese box office.