You may have forgotten when the Olsen twins started smoking — like you're pretty sure it was after Full House because Uncle Jesse would not stand for that. Well, up until 2003, Mary-Kate and Ashley were still boasting a sober and wholesome image. According to Rolling Stone, "the girls freely admit they're not the Hilton sisters. They don't smoke or drink. 'We don't, but I'm not one to judge,' says Mary-Kate." And rightfully so, because cut to 2005 and the girls are getting busted for chain smoking at museums.

And look, we're not here to preach or judge (ok, lies, we're here to judge, but not about addictions). But it definitely seems like smoking seems to be the culprit when it comes to Mary-Kate and Ashley's new, rather haggard looking faces. When we asked Miami-based plastic surgeon Dr. Rian Maercks about whether Mary-Kate's gotten work done, he believed the cigarettes did more damage than a telltale knife.

"I would say that technically the majority of the changes we see could be due to accelerated aging associated with nicotine products tobacco or other environmental factors, as she is a known smoker," he told Life & Style exclusively. Yikes.

So okay now, how much do Mary-Kate and Ashley smoke if it rendered them a dual shell of little Michelle Tanner? We looked at how bad their habit has gotten over the years, and let's just say it's, um, a lot.