This cute sweet shamrock hat knitting pattern has a rainbow stripe brim and a cute shamrock design on the front in duplicate stitch! This St. Patrick’s Day Hat knitting pattern is knit in the round with a ribbed striped rainbow brim. The Shamrock motif is added at the end with duplicate stitch. This pattern does require basic knowledge of duplicate stitch in knitting. Your little leprechaun will love the Sweet shamrock Hat knitting Pattern!