Hi Sammy-Jo. Thank you for posting your questions and photos.
A question you have to ask yourself is what your desired outcome is: is it an improvement in breast shape alone or improved breast shape AND volume. If you are happy with your current volume but just wish to have the ptosis (droopiness) improved, then a breast lift (mastopexy) is all that is required. 
The other option if you wish to have more volume in addition to correction of the droop is a lift with an implant. Your degree of ptosis will not deliver a good result with implants alone. The type of implant used in a lift with implant will be dependent on your existing chest anatomy as well as surgeon choice.
All the very best.
Dr Ray GohValley Plastic Surgery