Breast Implants to Lift Slightly Sagging Breasts?

Judging purely by your photos, you may be fine with an implant only. There can be argument whether it should be subglandular versus submuscular versus dual plane. You have enough lower pole tissue that a dual plane would help you and give the result you need without the down fall of subglandular implants.
I would try to match the implant to your base diameter and you may benefit with a higher projecting implant to get you the fill and as much lift as possible.
Just remember only through an exam can it really be decided if you need a lift.
Good luck.

Thank you for your question. There are some women who will benefit from adding a breast lift to a breast augmentation. In general, if your nipple is located at or above the crease below your breast then a lift is typically not needed. In addition to nipple position, measurements are also used to determine when to add a lift. It's important to know the breast implants do not lift the nipple to any significant degree, so you can't escape the lift by using a breast implant. Breast sagging is a spectrum and women with mild/moderate sagging can sometimes go either way. In this situation, I typically recommend breast augmentation as an initial procedure, waiting six months, and then only performing a breast lift if it is truly needed. When considering breast augmentation make sure you find a board certified plastic surgeon who will take the time to answer all of your questions and explain all of your options, so that you can decide which procedures are right for you. 

It’s not
unusual for plastic surgeons to encounter patients who don’t have breast
hypoplasia associated with mild breast sag.These patients want larger breasts, but don’t want the scarring that’s
frequently seen with breast lift surgery.Under these circumstances, dual-plane
breast augmentation offers significant advantages.This procedure creates a pocket beneath the
pectoralis muscle, as well as a separation between the muscle and the overlying
breast tissue.This results in the
implant having muscle coverage superiorly and breast tissue covering the
implant inferiorly.Your pictures suggest that you would
be an excellent candidate for a dual-plane augmentation procedure.