The tutorial gives clear instructions for taking your measurements & making a gauge swatch.

Then easy step-by-step instructions tell you how to customise the bra for any size, any yarn & any gauge.

Single crochet & decreasing are used.

Requires
Measuring tape
Pencil and paper
Yarn
Crochet hook
Elastic Band (about 1 inch wide)
Hook and eye clasps
Needle & thread

Cotton blends work well.

Fingering, sport & DK/light worsted weights are recommended.