The model, musician, and former First Lady of France tells T that she has switched from regular cigarettes to the e-kind, for the sake of her health and looks. “It’s delicious, you know," she says, sucking on a mint-flavored one. "It’s so nice that I think it has to be toxic. You never find something very delicious that is completely untoxic, right?" Here's the real question: Is a regular e-cigarette habit better or worse than one real cigarette once a week?