Montana Fire Series by Susan May Warren. I've been eyeing this series quite a bit lately. The third book (the first shown here is a prequel) comes out today, so that's on my list as well. I love this author and have heard really good things about this series.
2. The Infernal Devices by Cassandra Clare. I loved this series. Loved it! I still do and would love to have a hardcover collection on my shelves. It has such a great mix of historical England, paranormal aspects, danger, fabulous dialogue, and romance.
A Posse of Princesses by Sherwood Smith. This is a classic and an old favorite. It's a book I still do not own. If I didn't spend my book budget on current releases I would already own this and I do plan on getting it sometime soon.
4. The Runaway Princess by Hester Browne. This book comes highly recommended and I have yet to read it. Some blogger friends re-read this one on a regular basis, so I really need to add it to my library.
5. Shadows by Robin McKinley. I love this author and I have yet to read this, but it has been highly recommended to me. I don't doubt that I will love it.
6. To Get to You by Joanne Bischof. This is another book that I have heard blogger friends rave about. It's a genre I love and it sounds like one I would re-read, so it needs to be added to my shelves.