I know! I guess I decided at some point in S2, when Willow was always wearing sweaters while Buffy was wearing little dresses, that Buffy must not get cold easily. But yeah, September in SoCal doesn't really seem like sweater weather. Nonetheless, Dawn is adorable and awesome in that episode. I love her "favorite activities include never having to do this again" speech during the first-day-of-school icebreaker session.