The Retro Rainbow Heart Hat knitting pattern is big, bold and colorful with a touch of the 80’s! A light blue heart with rainbow stripes arching through it is added to a comfy white hat with duplicate stitch for knitting. This easy colorful hat knitting pattern is a great pattern for advanced beginners and the pattern includes instructions to knit this hat pattern in the round with worsted weight yarn in any of six sizes from baby to child to adult!