5'2 and 110 lbs. Will 475-520cc size implants work for my body type? And will I need a breast lift?

Thank you for the question and pictures. Base on your photographs, you are starting at a great place and should have a very nice outcome with breast augmentation surgery.  Breast lifting is not necessary. Based on your starting point, I think you will have a very nice outcome regardless of the breast implant type utilized; therefore, it will be important for you to learn about the pros/cons associated with saline versus silicone gel breast implants. You may find the attached link describing the differences helpful to you.   Generally speaking, the best online advice I can give to ladies who are considering  breast augmentation surgery ( regarding breast implant size/profile selection) is:
 1. Concentrate on choosing your plastic surgeon carefully.  Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you're looking for. Ask to see lots of examples of his/her work.
2. Have a full discussion and communication regarding your   desired goals  with your plastic surgeon. This communication will be critical in determining which operation and/or breast implant size/type/profile will most likely help achieve your goals.
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as “natural” or "C or D cup" etc or " lovely cleavage” means different things to different people and therefore prove unhelpful.
 Also, as you know, cup size varies depending on who makes the bra; therefore, discussing desired cup  size may also be inaccurate.  The use of  in bra sizers and computer imaging may be very helpful during this communication phase.
3.  Once you feel you have communicated your goals clearly,  allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals.  Again, in my practice, this decision is usually made during surgery.  I find that the use of temporary  intraoperative sizers ( with the patient in the upright position)  allows for accurate selection of breast implant size/profile to achieve patient's goals as precisely as possible.
I hope this, and the attached link, helps.

You
are an excellent candidate for a new technique called Breast Augmentation with
Mini Ultimate Breast LiftTM.Using only a circumareola incision it is possible to reshape your breast
tissue creating upper pole fullness, elevate them higher on the chest wall and
more medial to increase your cleavage.Through the same incision, implants can be placed.Aligning the areola, breast tissue and implant
over the bony prominence of the chest wall maximizes anterior projection with a
minimal size implant.Small round
textured silicone gel implants placed retro-pectoral look and feel more
natural, are more stable, less likely to ripple or have complications needing
revision.Implants profile is irrelevant
in the retro-pectoral position since the muscle compresses it.Best Wishes,Gary Horndeski, M.D.

Thank you for your question. It is much better to accurately discuss implant volume and projection with an in office exam and detailed measurements. In order to make an accurate size recommendation, I would need to assess your chest wall and breast mound measurements/characteristics. I use these measurements to help me during the sizing process to guide you to a safe result for your chest wall and just as important, one that meets your end desires.The next step is to try on this range of implants in the office with your doctor. The key to this success is showing your surgeon the body proportion you desire with a bra sizer and allowing your surgeon to guide you to the right implant. It will be much easier to communicate in implant cc's than cup size when determining the appropriate implant for you during the sizing process. In addition, review of photos and use of rice bags can be very helpful to the patient and surgeon in achieving a safe and happy result. Close intereaction and involvement from your surgeon during this process can help alleviate the anxiety and fears of choosing the right size. I wish you a safe recovery and fantastic result.Dr. Gill