Considering this, what did farmers wear in the 1600s?
Cotton was prevalent then so probably cotton shirts and wool pants. All farmers wore hats, either straw or some kind of fur in winter. Boots and longjohns completed the outfit.
Subsequently, question is, what people wore in the 1500s? Women's fashions of the early 16th century consisted of a long gown, usually with sleeves, worn over a kirtle or undergown, with a linen chemise or smock worn next to the skin. The high-waisted gown of the late medieval period evolved in several directions in different parts of Europe.
Secondly, what did girls wear in the 1600s?
In the 1600s, baby boys and girls dressed in the same way. Boys and girls wore gowns (one piece garments covering the whole body) with long sleeves and long skirts. When babies were learning to walk, long strips of fabric called “leading strings” were sewn into the shoulders of their gowns.
Did pilgrims wear buckles on their hats?
Pilgrims did wear the black conical hats you're imagining, called capotains, but they didn't have buckles. In fact, the Plymouth settlers were so poor, and so conservative of dress, that even their belts didn't buckle! They kept their pants up with leather laces.