Abnormal breast shape - what could be the cause of this? What are my options to correct this issue? (Photo)

I had breast augmentation done 6 months ago, 400cc round smooth silicone implants. I have notice that the implants don’t seem to drop or fluff; they still sit very high on my chest. The shape of my breast looks very unnatural. What could possibly the cause of it? Is it a surgeon’s mistake or Is it how my body reacts to implants. What are my options to correct this issue?