Learn How to Sew a Bucket Hat With This Free PDF Printable Sewing Pattern and Tutorial in Sizes Adult, Child, Toddler, and Baby. This is a sponsored post on behalf of JOANN. All thoughts and opinions are my own. Bucket hats are all the rage right now! I have to admit, it took me a minute to come around to this trend because it feels SO 90’s but once I put one on my head I was totally sold.