Series I need to complete

With the release coming up of Royal Wedding, and the Waterstones Piccadilly event with Ally Carter and CJ Daugherty, I have been thinking of some of the series that I have read, but don't actually own all the copies of, leaving my shelves a little sad (but maybe my bank account a little happier...). So here are the top series I still need to complete.

1. The Princess Diaries - Meg Cabot
I KNOW. I have remedied the fact that I never finished reading this series (due to being "too cool" as a teen for a while) but I still don't own books 7 to 10. I need to sort this!

2. Sarah Dessen
Not technically a series, but who cares. I have read everything Sarah has written, but mostly either from the library or on Kindle, which is problematic when you want to reread them!

3. Gallagher Girls - Ally Carter
Again, I mostly read these from the library. Sadly.

4. Night School - CJ Daugherty
I read some of these on my Kindle, which just doesn't feel the same.


Does anyone else own any incomplete series like this?