A thigh lift is a cosmetic surgery that is done to reshape the thighs. This surgical process is advantageous for people who have lost a significant amount of weight and want to change the way their skin looks. After weight loss, the thigh skin can lose its elasticity and look saggy and unpleasant. During the surgery, the doctors will cut the excess skin and fats from the thighs to make it look more toned and even. This will make the thighs appear more contoured.