Two-book series/duologies seem to be gaining popularity in YA! Check out some of these duets! Except Treatment is a trilogy not a duet.
The Lunar Chronicles . Absolutely one of my favorites ! It's a clash of Disney princesses, Indiana Jones and Star Wars! Must read Marissa Meyer
Teh Chronicles of Narnia - C S Lewis
You have every book in the series proudly displayed in your house. 19 Undeniable Signs You're Obsessed With "The Mortal Instruments" Series
20 series to read if you loved divergent
Snow Like Ashes is one of my favorite series!
If you like the hunger games. start on this. The Maze Runner series by James Dashner. The Maze Runner, The Scorch Trials, The Death Cure, and The Kill Order (prequel).
Booktopia has The Fallen Series Boxed Set by Lauren Kate. Buy a discounted XD of The Fallen Series Boxed Set online from Australia's leading online bookstore.
The Vampire Diaries is a young adult vampire, romance and horror series of novels created and written by L. The Vampire Diaries is now a hit television series on The CW. The story centers on Elena Gilbert, a young, beautiful high school girl who