She bullies Carrie White by throwing tampons at her when she received her first period in the shower and she presumably attended the prom and was electrocuted along with the rest of the students and by Carrie White who killed them.
Julia McDermitt has long blonde hair and is a member of The Mortimer Snerds. She was present during the shower incident and also at Miss Collins's detention. She is also shown going to the gym as Miss Collins tell the girls to practice drills. At the Prom, she was wearing a green dress. When Sue Snell sneaks into the Prom she is seen hugging her date. When Tommy Ross and Carrie White win Prom King and Queen she is seen screaming and clapping with joy for them. In Carrie's rage, Julia is seen trying to escape while Norma Watson gets sprayed to death with the fire hose. Julia also bumps into Miss Collins and the others before dying.
She dies either being trampled or burned to death.
- Originally, when Carrie leaves the burning stage Julia and her date were meant to be seen running away from the flames, but they were replaced by another couple.