Its Alaska. Have you ever been there? They all wear blue jeans and baseball caps.
Just a side note...
Lived in Alaska, jeans are standard that's true (even called "Alaska casual" when attending events that have dress codes), but people don't get out much so when they do, (talking women here) they don't wear baseball caps. In fact, the entire time I lived and traveled all over Alaska, the only women I ever saw in caps were in the military.
Also Wasilla is outside Anchorage, which is just like any other medium size city in the US. It's on the coast of Alaska so doesn't have problems getting supplies..there are like 3 malls, and all the glitz and glamor of regular American cities. People have mis-impressions about Alaska from tv and Hollyweird. I know, I was one of them until I lived there.
Well, just look at Palin. She buys her clothes in Alaska. And other women have access to the same kind of stores.
All that to say, the women there dress just like women everywhere else, and if a group of them were in jeans and baseball caps, well you can read from that exactly the same thing as seeing women in the rest of the states in a group with jeans and baseball caps. 