Board Thread:Questions and Answers/@comment-98.95.22.178-20140731190807/@comment-6697950-20150408084135

Both the anime and manga are a-dap-ta-tions. They were not made by the author himself. He just wrote the original story which the mangaka and anime producers decided to adapt whichever way they wanted.

And there wasn't anything that said that she was completely naked, as far as I remember.