"I eat. I had my Big Mac yesterday from McDonald's," she told Us Sunday at the Matthew Williamson NYC store opening. "I eat just as much as I always have."
    The 22-year-old actress (who has raised eyebrows before for her skinny frame) said she thinks she has just been "working a lot." She said she also blames "stress ... and lack of sleep when I travel."
    Said the star, "I think it's all that stuff that adds up."
    Lohan - who said she doesn't know how much weight she has lost ("I've never weighed myself in life," she said) - added that she doesn't think about the pressure to be thin in Hollywood anymore.