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Tiffany Blaine Davenport is a popular girl from the school North Hampton Hills, where MacKenzie and Nikki transfer to. Tiffany was Nikki's first friend in North Hampton Hills when Tiffany greeted her to the school. Her two friends, Hayley and Ava, were also Nikki's friends.
Tiffany is portrayed as an even bigger bully than MacKenzie. Tiffany, Hayley and Ava all stop being Nikki's friend when Tiffany shoves a Science Club member, Patrick when sending a text to someone. They all accuse Patrick of body slamming Tiffany and Nikki says that Tiffany slammed into Patrick. Tiffany becomes mean to MacKenzie and Nikki and MacKenzie and Nikki team up and become frenemies. Tiffany is also Nikki's frenemy.
Tiffany is self-centered, entitled, manipulative girl, much like her counterpart, MacKenzie Hollister. She is constantly taking selfies of herself, commenting on how fabulous and pretty she is.
Tiffany has long hair that is put up into a half-ponytail and curled at the ends. She also has bangs. Her hair and eye color are unknown.
Although students are require to wear uniforms at North Hampton Hills High, Tiffany is illustrated wearing expensive heels and complex up-dos. It is assumed she wears designer clothing outside of school, similar to MacKenzie.
It is not known whether Tiffany has siblings or not. It is assumed she lives with two parents.
No pet(s) of Tiffany's was mentioned in book 11.
The only girls who socialize with Tiffany are Ava and Haley. All three enjoy tormenting their peers and do not only limit to girls, like MacKenzie. They are seen physically hurting a boy by running into him and tease the "nerds" at the school. It is possible that Ava and Haley are fake friends of Tiffany, just like Jessica was to MacKenzie.
Tiffany does not reveal a crush or looks to have feelings for anyone.
- Tiffany only appears in Dork Diaries: Tales from a Not-So-Friendly Frenemy.