I had only one 'walking outfit' - a shirt and shorts and sports bra that were dedicated to walking (i.e. sweating) only. I had also one 'camp outfit' (more appropriately named 'town outfit' on the camino I suppose) - a shirt and pants and sports bra. I then also had extra underwear/socks. I am a firm believer in having only one set of 'sweating in' clothes for these types of adventures (I've done this on walks, hikes, and bike tours). My strategy was to remove walking clothes, shower, put on 'town clothes', wash underwear/socks from the day (and occasionally the walking shirt/shorts/bra...but not every day). I washed the 'town clothes' a couple of times when I had time (so if I got to town early, I'd wash them and stay in my 'walking clothes' while they dried). Part way through the walk, I picked up a very minimal/lightweight dress and immediately began using that as an intermediary. LOVED having it. I put it on after showering, and then changed into my 'town clothes' later when it cooled off. Pictures of everything I brought
located here, with descriptions of uses. Buen Camino!