Flash back to the early 80s.  Formal "Rush" in mid-September.  Very few houses with A/C since Ohio is supposed to be cold.
 
Round 1 - 18 houses in 1 day.  I wore Liz Claiborne Khaki Bermuda shorts, a yellow Ralph Lauren polo and brown 
Pappagallo flats.  I think I had an argile sweater over my shoulders.  I screamed of "preppy".
 
Round 2 - I don't remember, but I attended about 10 houses.  
 
Round 3 - I can't remember the number of houses (maybe 6), but I remember they were over 2 nights.  I wore suits, which was not typical.  One was a raw silk teal suit and the other was an off-white heavier material I do remember the white suit was hot.
 
Pref - 3 houses on 1 night.  I had this dress with shiny material (some type of rayon) that had diagonal strips in black, red and blue.  It had a tie belt and puffy sleeves.  I think I wore black sheer hose and black pumps.  
 
My hair was in a 
bi-level cut with "side burns"