This young woman is 5'7" tall and presents with A cup breasts. She wishes a full C cup or larger. I placed 465 mL saline implants in the sub muscular position.
I find that creating cleavage takes time and care, at least for me. I will admit to not being the fastest surgeon especially with breast augmentation. Most women do not wish widely separated breasts- that gives a less than natural appearance. Attention to detail in creating the pocket for placement of the breast implant by your surgeon pays off with a more natural appearing cleavage.