Based on your photos, you have some sagging. If you have decided against a lift, then in terms of implant sizing, there are many variables in recommending implant size/type. I base my implant recommendation on patients' body (chest height, chest width, existing breast tissue) as well as their desired look. I usually do not talk about cup size. As you know, cup size varies with brand and styles of bra. I would go for the desired look. Review before and after photos and see what kind of look that you want. Implants come in different types (silicone, saline), shape (round, anatomic), and profiles and volume. More meaningful recommendation can be made based on direct examination and in-person consultation. Please visit with a board-certified plastic surgeon.Best regards.