The DUFF: Designated Ugly Fat Friend - Kody Keplinger I'm nearly 30 and I'm still the DUFF so I found it quite easy to relate to Bianca's frustrations. Her friends, Casey and Jessica, were wonderfully drawn and I enjoyed the relationship she fell into with Wesley. My biggest issue is with the ending. The conflict at the middle of the story is pretty dark and heavy. I expected the end to be dark as well, even if that darkness was coupled with a happy ending. Bianca's life goes from grey to bright and sunny too quickly and the shift in her confidence is wrapped up in a boy who isn't right for her.Otherwise, it's a great read. Kody is on her way.