Which book character created by Jacqueline Wilson has now became a well known TV series?

The book character created by Jacqueline Wilson that has become a well-known TV series is Tracy Beaker.

The series, simply called "Tracy Beaker," has had multiple iterations, including:

* The Story of Tracy Beaker (2002-2005)

* Tracy Beaker Returns (2010-2012)

* The Beaker Girls (2014-2015)

* My Mum Tracy Beaker (2021-present)