Plant-based clothing comes in a variety of forms, both stereotypically and historically: grass skirts, barkcloth, et cetera. But one form I have only ever seen in fiction is clothing made from straight-up leaves (whether woven, sown, or whatever). It has a fairly established place in both fantasy garb, and in many stereotypical depictions of tropical attire.
My question is if there's any actual historical precedent for this. Did people ever make clothes out of whole, intact leaves, or was plant fibre the only material ever actually used? How practical would leaf-based clothing, or clothing that incorporated leaves, actually be? In a warm enough climate, with tough enough plants, would it be manageable, or is it all just fiction?
Edit: While hats certainly qualify as a usage of leaves in clothing, I was particularly curious about their potential integration into garments meant to cover the body (such as shirts, skirts, etc.) E.g. Was it ever done? Is it viable? Etc.
Edit #2 (Re-edited, because I'm not the most eloquent fellow): A lot of people have brought up straw and straw hats, and while that's a perfect example of plants being more or less directly integrated into clothing, I'm more curious about the integration of traditional leaves (such as leaves from trees, bushes, etc.). Whether palm fronds qualify as leaves is a question I leave for a more qualified individual than I, but I think, as leaves taken from a larger plant, they work for this question.