Frost Children is an American music duo from St. Louis, Missouri, formed in 2019 by siblings Angel Prost and Lulu Prost. They are now based in New York City. Their music has been described as pop with influences from hyperpop, glitchcore, EDM, Jersey club, punk, bloghouse, and bubblegum electronics. The duo released early music in the 2020s and issued albums including Speed Run and Hearth Room before the 2025 album Sister. Their work is characterized by rapid shifts between styles, electronic production, and melodic pop songwriting. In live settings, Frost Children are known as a sibling electronic-pop act performing their own catalog rather than a tribute or one-off event.