Allegra Acosta is an American actress. She’s also a singer. In 2015, she started her professional acting career. During her initial years, she mostly appeared in short films. She appeared in three — American Girl, Los, and Once Halloween. At the same time, she also began her TV career. She debuted as Aubrey Garcia in 3 episodes of the TV series 100 Things to Do Before High School. Afterward, she had a one-time role on the live-action series Just Add Magic. She recently gained recognition after landing the part of Molly Hernandez on the new series Runaways. She has been starring the said role since 2017.