She'll play a Christian love interest for the character Silas. Of the experience, Olsen told Entertainment Weekly, ''To say that I got to work with those people — with Mary-Louise Parker! — is a great thing."

But Mary-Kate for very easily have been overlooked for the role for the same reason that many will say she was given it: her fame. Jenji Kohan, creator of "Weeds," told EW, ''The truth is we're so protective of the show. We don't stunt-cast. She earned that part. It's weird to say that she's trying to break into the business, because of her status, but she is and she should have her shot. We did have to change our signs, though. When we were on location, we couldn't have Weeds signs up because we would get stalkerazzi.''

Mary-Kate is very aware of this paparazzi attention constantly surrounding her. She says, ''I don't want my picture taken. The only time I think it's okay is at a red-carpet event or a photo shoot. So every time I see paparazzi, I cover my face so they don't get a picture, and I'm just 'the mean person who doesn't smile…' I would love to be able to swim in the ocean in Malibu. But that is asking for a bikini shot. That's inviting something that I don't want to happen. I don't need to be on a 'Who's Skinny, Who's Fat, Who's Looking Healthy, Who's Not Eating?' list.''

We all remember the days when Mary-Kate was on the top of the "Who's Not Eating" list. But the 21-year-old, who went to a Utah rehab facility for anorexia in 2004, says, ''Mentally, physically, I feel pretty on top of my game right now. Talk to me next week, I don't know. Today, I feel good.''