What are some fun books to read over the summer?

I have, unfortunately, run out of books. I would really love some suggestions of what to read. I like pretty much any type of book, but at the moment, I would prefer a romance, or something funny (suggestions don't necessarily have to be a romance or funny, but if they are, all the better!). Any suggestions you could have would be great. I've read most of the more popular books (Hunger Games, Harry Potter, etc), so maybe something less well-known. I would really appreciate it! :D