This pattern was first published in Crochet Pattern a Day Calendar 2006 & was called "Universal Shell Lace Hat" and then later published on my first blog, Granny Square Woman, as "Peach Shell Crocheted Hat" (because the sample was made with a peach colored yarn). It's been completely rewritten and re-edited for clarity. Circumference at base of hat: size small 16" (stretches to 18"), medium 18" (stretches to 20"), & large 20" (stretches to 22"). Pattern includes all 3 sizes. Thank you to JBSpinner, redcurlysue, knitterbeth, HSULadybug, TanyaRC & crochooked for testing the hat & thank you to Chaitanya (cmuralidhara on Ravelry) for her tech editing. BASIC SKILLS NECESSARY double crochet shell front post double crochet SIZING / FINISHED MEASUREMENTS 16", 18", 20", all sizes stretch an extra 2"