She confesses that the chewing gum helps give her more energy, saying 'it's like drinking three Red Bulls.'
Jessica Simpson has developed an addiction to nicotine chewing gum, even though she has never smoked a cigarette. The singer started using the product, which is designed to help smokers quit, by accident - but now relies on it for energy.
She says: "I am addicted to Nicorette gum... Never in my life have I smoked. The first time I ever chewed a piece of Nicorette gum one of my close friends' mother gave it to me. I think she thought she was giving me a piece of regular gum."
"I was chewing it and it was like a party in my mouth. It was like fireworks and 'Oh my God, I'm talking a million miles per hour and I love this gum and what kind of gum is this? I have to have this gum!' It's Nicorette and it gives me energy - it's like drinking three Red Bulls (energy drinks)."