BBL done 1 yr ago left loose lumpy skin around my waist and lower belly. Is surgery necessary to repair the tissue? (photo)

You appear to have some contour abnormalities of your abdomen after your BBL. Without seeing your pre-op photos or operative report, it is impossible to know for sure what caused it, but I suspect it was uneven and over aggressive lipo of the abdomen. I think this can be made better, but you need the help of an experienced board certified plastic surgeon. Repair will likely involve some targeted lipo of your upper abdomen and some skin removal of the lower abdomen. If you are uncomfortable with your original surgeon, then seek another opinion. You should get your pre-op photos and your operative report from your original surgeon so that your new surgeon has all the necessary information to help you. I think things can be made better,  but not perfect. 

You have contour irregularities from uneven and/or overaggressive liposuction.  A BBL is a great procedure, but sadly this is a common occurrence when people chase an artificially small, carved out waist and disproportionally large backside.  This problem is even more common with women who have had children and have all the abdominal changes associated with pregnancy, including loose skin, rectus diastasic, etc.  The good news is you can improve the appearance of your abdomen with revision liposuction, possible fat grafting or a tummy if you have enough laxity.  Good luck.

Hello dear, thanks for your question and provided information as well... Actually yes, since you have one year from your first procedure, you would have to consider a revision. 

Liposuction does not tighten the skin. Lumps may have occurred from over or under treatment. Best of luck.

From your photo, it does appear that you have a nice "straight-on" shape from the BBL.  However it is difficult to guage from the picture alone whether you have uneven contours caused by excessive subcutaneous tissue alone or if you have too much skin.