Weight loss causing breast implant rippling?

Without examining you or seeing photos its difficult to give specific advice but what you are saying makes sense. Over the muscle implants require some coverage from the breast tissue, which is partially made of fat. In losing weight the coverage over your implant thinned and now its become visible. In theory, gaining some of the weight back may help cover it better, but weight gain is very unpredictable so you may not gain it where you are hoping to so be careful. Best of luck! 

Congratulations on your weight loss success.  You must share with us all how you did it.  I strongly recommend gel implants in thin women, and I have found that submuscular placement in thin patients can give a more natural appearing result.  I never recommend weight gain to a healthy patient.  So, unfortunately, revisional breast surgery may be your best option.