Size is determined by hook. Size 2 is F and size 3 if G.

Gauge is 1 square with F hook = 2 1/2” or
Gauge is 1 square with G hook = 2 3/4”

Yardage assumes 1 oz = 100yds

You will need:
4 oz baby pastels ombre sport weight yarn
2 oz pastel pink
4 3/8” white buttons
scissors
yarn needle