3oz size 8 beads also required

The sizes are given for the width at underarm. Actual measurements (from the pattern) are 36.5 38.5 42.75 inches.

The pattern description:
The simple elegance of this evening jacket will help to highlight any dress over which you wear it. The additional touch of a single piece of jewellery adds to the overall effect and charm. (The jewellery mentioned is brooch)