Thank you for your question! Since there are no photos to examine, I am unable to evaluate how much fat and/or loose skin you have. With weight gain, most patients will need liposuction again, as getting liposuction does not prevent weight gain in that area. However, you may or may not need to also address the loose skin, as skin tends to stretch over time and with weight gain. If there is a significant amount of loose and extra skin, you may benefit most from a back lift (skin excision). If you are a candidate, this would provide you with the best result. However, if you have some loose skin but not enough for skin excision, you can try using Jplasma for a 2nd time to tighten the skin further (or other modalities such as bodytite, laser, etc). It has been shown that additional skin tightening treatments can tighten the skin even further, as well as improve the quality of the skin, preventing is from stretching so easily in the future. Please consult with a board-certified plastic surgeon to discuss your options and good luck!