Errata for the chart: last st of row 16 should be a purl, not a knit.

Warning about the chart: on the WS, knit the stitches as they are shown on the pattern. For example, apurl is a purl, showing as a knit on the RS.

Amount of yarn isn’t given for the bonnet, just for the whole clothing set. Likely one ball is enough for the main part, plus some extra contrasting yarn for the crochet trim.