it may not be a fancy outfit, but it's an expensive one. i'm trying to date the time frame of this pic, i'd estimate it to be latter half of the 70's. there's a lot of detail in the pic, you can almost reach out and touch the fabric.
i remember vividly not being able to afford something as nice and airy looking as that outfit. plus the stocking feet in the sandals, she was somewhere during the day that didn't allow bare toes, like at work.
i can guarantee you, she wasn't out hiking. if the background of this pic means they were in a rugged area, then he or she or both of them came there from somewhere else, and she had been at work, or going to work at some point.
and i'm pretty sure the pic where she's looking uncomfortable is the first in the series, and then the second one is her with her shirt open, with her smiling.