36 books • 3 series
Book #1: New Friends, 1
Book #2: Birthday Surprise
Book #3: Secrets and Sapphires, 3
Book #1: Hello Kitty and Friends (1) - The Friendship Club
Book #1: The Friendship Club
Book #2: The School Trip
Book #3: The Summer Fair
Book #4: The Pop Princess
Book #2: 01: Stardust the Flying Unicorn