There are 1 book by Kellie O'Callaghan on BookOrb. A strong starting point is UConfidence (2022). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Kellie O'Callaghan written?
BookOrb lists 1 book by Kellie O'Callaghan.
Where should I start with Kellie O'Callaghan?
A good starting point is UConfidence (2022).
What is the Kellie O'Callaghan books in order list?
In publication order: 1. UConfidence (2022).