Justina was born in North London, England to Nigerian parents. At the age of six Justina developed her love for acting. By the time she was ten, Justina began performing in talent shows at her school which sparked her teaches to ask her parents to enrol her into Theatre school. But not having the finances to take their daughter to a prestigious theatre school, Justina had to continue to just participate in local and school talent shows. 

At the age of twelve Justina began writing movies after being bored in IT class, at age fifteen she wrote her first song and eventually wrote enough songs to complete an EP. After finishing secondary school Justina went to a local musical theatre college where she pursued a theatre career, she finished with the highest level diploma in musical theatre, acting and music, she went on to perform in plays and musicals in London's west end.

Justina  has worked in feature films and TV shows, including MBC's/Apple TV series, 'Slave Market' and 'Pride and Prejudice, Cut' on Amazon Prime. She has starred in commercials, walked in several runway shows and modelled for many clothing companies. Justina also started her own production company, Justina Productions, her first project was the short film, 'living with Sickle Cell' which debuted at the Gideon's treasure gala in 2022 and 'Phoenix Rising' which debuted at the Cannes film festival on May 22nd. She is currently working on her first feature film, 'The Unsaved'. Justina new movie 'Tribe' premiered on October 10th 2025 at the Grimmfest film festival in Manchester, England. Justina released her debut single 'ROAR' on all major platforms and released the music video on VEVO. Her EP is set to drop in 2025.