Quote From Tudor_Queen:
That's right! You're not expected to have novel papers and novel thesis - the novel papers make the novel thesis! If this helps, my thesis was like this:

Introduction chapter
Paper 1
Paper 2
Paper 3
Paper 4
Discussion chapter

All my papers weren't published (just in case anyone thinks I'm bragging, ha) - I just stuck with the paper format once I'd decided on it even though it became apparent that I would probably only submit one of the papers.

Good luck!!

Quote From pm133:
Same here. All my thesis chapters were from my published works with the exception of a theoretical background chapter.
I rephrased each paper to avoid any nonsense over "self plagiarism".