What would be the best solution for deep stomach lines due to slouching?would you recommend the tummy tuck?or laser resurfacing?and if so of either one,what eould be the cost of it?(please note that im a very thin person )-body fat i dont believe is the p

Get a free consult: Generally I would tell someone your age not to worry about this cosmetically. However you can see several plastic surgeons & ask their opinions at no cost to you. Once you sign up for a treatment there will be cost! If you're thin there is no reason you should require a tummy tuck, Laser procedures will probably do. This would also carry significantly less risk to you personally. Stay healthy

Improve Posture: You are not alone, a lot of people who are not obese have that seemingly permanent crease you describe and it is most often posture related. You even noted slouching in your question. A tummy tuck or laser resurfacing should not be your first choice. The best advice would be to exercise to strengthen your core and improve your posture. Physical therapy or a personal trainer may help with posture.