Grace was born to Dominican parents on January 7, 1995 in The Bronx, a borough of New York City. Her mother runs a hair salon in South Florida. She was raised in Davie, Florida and attended Indian Ridge Middle School and Western High School, where she participated in musicals, talent shows, and choral performances. Singing and dancing from a young age, Grace entertained them along with her five older siblings since she was two. She speaks English and Spanish.