laser skin tightening before after

What would be my best option for tightening my loose belly after 2 kids?
Ive heard of BODY WRAPS, REFIRME AND LASER SKIN TIGHTENING. I also work out too. Ive lost more weight than before both of my kids. But I want a smooth belly so I can wear a bikini again!! Im only 20!! What would be the best thing to do so I dont waste any money on something that wouldnt work.
lots of sit ups 5 days a week 1 hour of diferent exercises...or a tummy tuck
Aesthetic Laser Video, Skin Tightening Laser Video, Skin Treatment Video
