I can't imagine any person using sharpie on their face. For one it takes forever to remove and segundo it's not good for you. I watched an interview of her's a couple of months hace and she stated that she uses the liquid eyeliner from Cover Girl.
i think i remember her saying in an interview that she was on a plane and she didn't have eyeliner so she went to the bathroom and put sharpie on her eyes :)
Honestly I don't know. But it doesn't really matter. People go all crazy on celebs and how they look and their makeup and personal life. If I were famous I wouldn't even want to be. tu will be criticized about everything. Whether its about who you're dating o what tu wear. So its normal to hear rumors like that, but its just that tu shouldn't even care. She can sing. That's all that should matter in a career but people stress over other careless things. So if I were tu I would forget about it.