Isabella is [Jamie Kelly]|'s best friend]]. She bullies lots of people. She is also occasionally sarcastic. She has a dog named Bubs, who was originally named The Bubblegum Duchess by Jamie, but Isabelle didn't like that name, so she changed it.
People bully people due to being teased by her older brothers. Because of her older brothers, she has mastered skills like fake falling down the stairs, fake crying, and buying things online to make it look like her brothers did them. Some of her crazy schemes include drawing green marker on her contact lenses to make people think she has green eyes. It didn't work out too well, because she became partially blind and Jamie acted like her "guide girl".
She is a 5 on the popularity-o-meter. She has brown hair and brown eyes.
Isabella wears things like men's ties,and vests.
She has brown eyes ,brown hair and wears glasses.ITS ALL IN MY DEAR DUMB DIARY WRITTEN IN MY DEAR DUMB DIARY
- Isabella collects lip gloss. In the movie her signature flavour is Watermelon Splash (which Angeline "stole"). In the book, however, Angeline "steals" her signature flavour of lip smacker called "ChocoMint".