Are implants under the muscle perkier if they are placed higher up?

After augmentation implants will settle along the breast fold, behind the nipple. A perkier look is more related to the size (volume) of the implant, shape, and profile (projection) of the implant. Your surgeon will work together with you to recommend the right style and size for the look you are hoping to achieve.

Implants must be centred behind your nipples. If they’re placed higher than your nipples, this would create an abnormal appearance and result in something called “bottoming out”.

It doesn't appear that placement of implant, on top or underneath the muscle, will significantly affect projection and shape of the breast. In some cases, however, placement on top of the muscle, may create perkier looking breasts. Hope this helps.