The pattern specifies a size 5 steel hook, which is not available on Ravelry’s hook options.

This is a pattern for an Edwardian dress for the Free Spirit Amigurumi Doll (available on Ravelry) with collar options (including a separate detachable collar), detailed on the blog post. The model is made with three colors. You will also need four 1/4” buttons (or you can use hook-and-loop closures if you cannot find buttons that small).

Yardage may vary based on the options you choose in the pattern, but one standard ball of size 10 crochet cotton in each color will probably yield several garments.