You've just confirmed my bias (es?), Suz and Nancylee. The previous "real" writers conference I've been to was in the midwest in July, so it was definitely casual because it was about 95 degrees out. Although there weren't a whole lot of people super-casual - there seemed to be a trend toward things that were dressier or at least different than jeans. It's that whole "pulled together, intriguingly arty but not too weird," balance I am having trouble striking. I tend to dress either quite casual or dressy in a very classic, dare I say boring, way.
Maybe the solution is either a skirt or a jacket, but not together. The problem is that I don't really have anything other than heels or ballet flats to wear with my skirts. (Is it too late to go shopping?)
The weather's been relatively warm here but in the city it could get frigid at any time. Of course, indoors it could be freezing or super-hot with all the people, who knows. It's at a hotel downtown.
It's the San Francisco Writers Conference, btw, in case anyone has been or wants to check out their website. There are a lot of seminars and a few keynote talks, along with pitch sessions, etc., that sort of thing. I have not been to this conference myself yet, or anyone I know personally.
/rambling