Hi Butterfly4u, Thank you for your question regarding can remaining stretch marks get bigger or worse when skin is pulled tight during a tummy tuck or BBL procedure. It is extremely rare that stretch marks will get worse after a tummy tuck, lower body lift, or BBL. Even though the skin is pulled tightly, it is rare that the skin is pulled so much it will cause for stretch marks to get worse. Indeed, after a tummy tuck or lower body lift, or BBL often the skin which is removed has stretch marks and these stretch marks are eliminated and thrown away. Again, it is extremely rare that stretch marks would appear or reappear after a tummy tuck or 360 circumferential lower body lift. I specialize in reconstructive plastic surgery after weight loss. If you have any more questions regarding the lower body lift, 360 circumferential lower body lift, belt lipectomy, belt abdominoplasty, or belt dermolipectomy please contact my office. Since the body lift is a big procedure, please seek an experienced, board certified plastic surgeon with significant experience performing the lower body lift. Do your research. Make sure they have performed at least 100 circumferential lower body lift surgeries and have the before and after pictures to prove it. Carefully examine their before and after pictures and check their reviews on RealSelf. If you cannot find an experienced, lower body lift surgeon in your neighborhood, consider traveling out of state if you must. Sincerely, Dr. Katzen. (“Verified” Plastic Surgeon, certified by the American Board of Plastic Surgery, Fellow of the International Society of Aesthetic Plastic Surgery, American College of Surgery, and International College of Surgery and member of the American Society of Plastic Surgery, American Academy of Cosmetic Surgery and RealSelf Hall of Fame.)