Eat healthy and continue exercising and working out to tighten and tone the areas. If there is a lot of excess skin, the only thing that can really be done is to pay a visit to a cosmetic surgeon and have a procedure done to remove the skin.
The only real way to get rid of a lot of excess skin is surgery. When you gain a lot of weight, your skin will stretch beyond its natural elasticity and simply cannot shrink back to its original state after weight loss has taken place.
Unfortunately, not much can be done, can massage supliform give some results, but not spectacular. Last solution is plastic surgery: to remove the excess skin. If you know a lot to your appearance and you can afford financially.