This bra for larger sizes is made in a similar way than the
Two other important points:
Before you attach the lining pieces together, sew the supporting tape underside the upper edge of the side part of the lining (3). It reaches up to the end of the strap in this model. Zigzag both edges of the band to the lining. The supporting tape can be whatever thin, non-elastic band, not wider than 1,5cm. This is a small detail, but the effects are huge.
The adjustment part of the strap can be made in this way too: it is integrated up to the center-back of the bra band.