I did the updates for the post doc thread last year. I would put them in a .doc and cut and paste in case SDN crashed/closed while I was updating.
Clothes: I wore a black suit with comfortable, stacked-heel boots and a patterned shirt (sometimes collared, sometimes not). I found people wore all sorts of variations of professional clothes, including slacks and sweater sets, colored blazers that were a different color than pants, etc. Not a single training director seemed to be concerned (all VAs or AMCs). Having been on the other side of the application process, I could not tell you what a single applicant wore to the interviews at my internship site last year.
I applied to 15 sites, 5 of which were "safety sites" for me. I was rejected from every safety site and all of my interviews (8) were at more "competitive" sites. I had 6 or 7 rejections before I got an invite.
I found the post doc process to be more anxiety-provoking than the internship process. I missed the match process.