Scheduled for 3rd BA; Will my warranty be voided?

I am going in for my 3rd Breast Aug. I was really hoping my last one in 2014 would be my final BA for years . First, I received 60'cc's more in my right breast, yet my right is still 2 sizes smaller than the left. I have 840 cc's. I know most are against big implants. I am going with 1050 on my right and 960 on my left. Will my warranty be voided? What's the internal bra. Do I need it, how much is it? My BA is typically 4,000 but I am getting it for only $1800.with local and light anesthesia.

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