Julie Harris Is Jessica's Best Friend In Mean Big Sister. She is the daughter of Robert and Jenna Harris and the older sister of Robby and Jimmy Harris. She lived in Tindale Valley, California from her birth until 2016 and currently lives in Wilford Heights, California. She was born on February 15, 2004. She is currently 15 years old.
Julie has light skin, dark blonde hair and blue eyes. She wears a gray shirt with darker gray stripes with a pink heart in the middle, along with blue jeans and white sneakers.
- In Episode 66 (New Beginnings), she and her family move to Wilford Heights due to her father's new job.
- She is one month younger than Jessica.