This review was originally posted on Andi's ABCs 
 More 3.75 stars 
 As a massive Lauren Oliver fan I was really excited to see she had a new book coming out. Delirium will forever be one of my favorite books and Vanishing Girls still blows me away. So when I heard about Replica and its unique concept I was immediately sold. Two books in one with different ways of reading an option? Yes please! And in the end...I really enjoyed the story. I didn't love it as much as I did past Oliver books but I was enthralled and captivated by Lyra and Gemma's stories. 
 When started Replica I had two options reading; I could read alternate chapters of each girl's story or I could read one girl and then the other. I started reading alt chapters but made it 3 before changing my mind. Instead I read Lyra and then Gemma. I can't really say how you decide to read it will change your reading experience but I can tell you that the way I read it I liked Gemma more than Lyra. 
 Lyra - 3.5 stars 
 Lyra was an interesting character to get into. Truthfully I had some trouble with her story. I felt like there were parts missing and I couldn't really get to know her. I mean I liked her enough, but she was hard to get into and to really sympathize with. I don't know if this was because of her not having much human interaction or what, but she was a big struggle for me, especially her bluntness. I also wanted more background. Instead the book just jumped into it. In the end though I did find her interesting and I want to know exactly where her story will lead and how everything that happened to her will affect her in the future. 
 Gemma - 4 stars 
 Gemma on the other hand I immediately liked. I liked her story and the sort of mystery that she found herself involved in. Basically I found Gemma to be more likable and her story more interesting. There was something just so basically real about her and I couldn't help but root for her to be the brave, beautiful girl she was. Her story unfolding really was interesting and 100% kept me invested. 
 Together I loved how these two girls' stories intersected and how they entwined. They made for an interesting story when combined and all the pieces were put together. I may not have loved it as much as Delirium and other Oliver books, but I am interested in knowing more and maybe rereading it with alternating chapters instead of reading one girl and then the other.