I sized up to an ‘I’ hook like many reviewers suggested, but my hat turned out a tad loose. I also increased the brim from 46 to 54 stitches, and did only 8 rows. I like how it turned out with this yarn and would recommend this pattern.

Read more on my blog: http://www.shesgotthenotion.com/2014/09/crochet-pattern-r...