Start from a basic block with darts and negative ease (1,5cm less in each quarter of circumference, or calculated according to the fabric).

Draw a circle with center at bust point and radius as half of the breast distance.

Draw the red cuts which you see in the photo, widening the darts as well.

Draw the new neckline, reshape the waist darts and reduce slightly at the hem.

Cut through the vertical lines in the body and merge the pieces to discard the dart volume.

Separate the two pieces of the cup.

This is the finished pattern!

Mark the key points with notches and you’re done!