VIDEO : EXCLUSIVE: Jennifer Lopez Opens Up About Her Beauty Secrets and How Her Kids Help Her Stay Y

Jennifer Lopez has been a sex symbol for decades and ET is unlocking her beauty secrets. For starters, the 47-year-old singer credits clean living (e.g. no smoking, caffeine or alcohol) and staying out of the sun for helping her youthful glow. Lopez also credits her 8-year-old twins, Max and Emme, as being partly responsible for her persistent youthfulness. Aside from child rearing and performing, J.Lo also sticks to a healthy diet, daily meditation and plenty of sleep.