This is a PDF pattern for THREE very different sun hats! The different versions for the brim include ruffled, wavy, and an elegant straight brim. There are also multiple options for edgings on the brim. Try it with or without a ribbon. The top of the hat has a very open V-stitch which makes it light enough for summer. It's a very versatile pattern with endless possibilities!
17 stitches and 18 rows in sc = 4" x 4" (10 cm x 10 cm) with 5 mm hook OR 15 stitches and 7 rows in dc = 4" x 4" (10 cm x 10 cm) with 6 mm hook OR see gauge checkpoints in pattern