It all depends on what the 13-year-old in particular like. I would highly recommend the Harry Potter series. They are easy to read with well-developed characters and a good plot.
im 13 but everyone is diffrent i like forebidden romance but my fave is night world and vampirew academy ......BUT I AM N NOT ONE OF THOSE UBSESSED GIRLS
i Am also a 13 teen year and i loved some of the following titles:
The Hunger Games Triliogy by Suzan Collins
Kissed by and angel by Elizabeth Chandler
The Touch Series (Includes Deadly little Secrets and Deadly little lies and deadly little games) by Luarie Faria Stolarz
The Blue is for nightmares series by Luarie Faria Stolarz
And i also liked the inkheart Trilogy by Cornilia Funke
The Blue Bloods series by Melissa de la Cruz is like the best and The Mortal Instruments Series by Cassandra Clare are my favorite books ever. Both of these series are like fantasy though, so it depends if you like that kind of stuff.
Well it depends wat u like I'm more into action adventure so here r some of my fav books maximum ride!!!! Anything by Cinda Williams chima Daniel x Harry potter the young wizards eragon the hunger games darkest powers the books of history chronicals(2 books series it doesn't matter which one u start with) Artemis fowl and bunchs of others