There are 38 books in the Sleepover Friends series.
The Sleepover Friends series does not have a new book coming out soon. The latest book, Patti's City Adventure (Book 38), was published in August 1991.
The first book in the Sleepover Friends series, Patti's Luck, was published in August 1987.
The Sleepover Friends series primarily falls into the General Fiction genre. This chapter book series was written for ages 7-10, but some older readers may still like to read these books.