Stomach Folds - Am I a Good Candidate for Liposuction?

I am 24 years old, but I've had this problem since I was 16. I have 2 stomach folds that crease where my belly button is at. In the past 6 months I've lost 26 lbs by dieting and working out, but the crease hasn't changed at all. I've been told this happens to pregnant women, but I've never been pregnant. Can my problem be fixed with liposuction? Or is my skin too stretched out? If so, is my only option a tummy tuck?