|Book Appearance?||Yes (Mentioned only)|
Adrianne Simpson is a girl mentioned in The Third Wheel. She sits three rows away from Greg in English period. Greg wrote to her on a Candy Grams he had bought and requested her to come to the Valentine's Day Dance. But Adrianne and Julia both gave a dirty look at him when they walked into class.
It is unknown what Adrianne looks like, as she has never been seen, only mentioned.
- Diary of a Wimpy Kid: The Third Wheel (Mentioned only)