Allyson Brooke Hernandez (born July 7, 1993) is an American singer. She is a former member of the girl group Fifth Harmony. Brooke began to establish herself in 2017 as a solo artist, featuring on Lost Kings' "Look at Us Now" with rapper ASAP Ferg. She released the single "Perfect" with DJ Topic in January 2018. In March 2018, she sang a medley of songs from Oscar-winning films at the red carpet pre-show of the 90th Academy Awards. Following Fifth Harmony's indefinite hiatus, Brooke signed a record deal with Atlantic. She released "Vámonos", with Kris Kross Amsterdam and Messiah, in November 2018.
In January 2019, Brooke released "Low Key" featuring Tyga, as her official debut single. She competed in season 28 of Dancing with the Stars, placing third alongside her partner Sasha Farber. Her book Finding Your Harmony was released in October 2020.