- Younger sister of Dakota Fanning.
- Enjoys playing soccer
- Parents names are Joy and Steve.
- Her mom named her Mary and her dad named her Elle, so her name is Mary Elle Fanning. Like her older sister Dakota, she uses her middle name instead of her first name.
- Learned the piano.
- Is one of 14 grandchildren
- Elle and her big sister Dakota are not allowed dogs or cats for pets
- Casting notes for the role of young Ruth Cole in _Door in the Floor, The (2004)_ originally called for identical twins, believing the workload of the character to be too much for one little girl to take.
- As a child, Elle used to play the role of newborn in her big sister Dakota’s roleplays.
- Is of Scandinavian descent.
- To celebrate her seventh birthday, she went with her family to see Cirque du Soleil perform “Quidam” during its run in Melbourne, Australia.
- When she attended her first Hollywood premiere, she was only three and a half years old.
- Dressed up as Marilyn Monroe for Halloween.
- Her grandmother spent $US600 at an auction buying her an old cream container that used to belong to Marilyn Monroe.
