You can do fat transfer with or without breast implants.
The procedure requires fat removal from an area where fat is abundant–like the stomach, butt, hips, or thighs, a.k.a. the donor site. After the fat is harvested and cleaned, your plastic surgeon will transfer it into the breasts. The added fat creates an enhanced lock and softens the edges of the breasts. It can add a ‘pop’ of volume at the top portion of the breasts, too.