"Bust adjustment" refers to making changes or modifications to clothing patterns or garments in order to properly fit a person's bust area. Full definition
The concept behind doing a full bust adjustment is to provide a well fitting garment for those of us larger than the cup size that the pattern is drafted for. (acolourfulcanvas.com)
I did end up sizing down and that worked, although I think that if I ever make it again, I will actually size down once more, and do a full bust adjustment instead for a better fit. (theartyologist.com)
I usually have to make shoulder and length adjustments, not bust adjustments, but if I ever have the opportunity to make a dress for a fuller figured friend, I know where to look. (acolourfulcanvas.com)