A ll under the age of 30 and some still even in their teens, these 6 young stars have all developed a smoking habit. Lighting up in public and puffing on a cigarette, they don’t feel as though they need to hide their love for cigarettes either. Lourdes Leon caused a stir when she was photographed enjoying a cig and her mother Madonna was quickly scrutinized even though the situation was probably beyond her control. Emma Roberts destroyed her clean image when she was spotted dragging on a cigarette while out in L.A. and former ‘Twilight’ actress Kristen Stewart seems to get through a pack a day – she’s always spotted with one in her mouth. Although it’s their own decision to make, these 6 young stars have all been seen smoking at one stage or another.