Julia Roberts: what I learned from Meryl Streep Streep has four children and Roberts worked with one of them, actress Grace Gummer, on the film Larry Crowne. Roberts, 44, said: "I thought, here is a source of information. I said, "How old were you when you realised your mom was Meryl Streep?" She said, "I think I was probably nine when I put that all together." "I said, "Were you cool with it?" She said, "Yeah, it was fine. There was no trauma. So that was hopeful. Roberts said her own children have no idea she is famous. Recounting a day out with her twins Finn and Hazel, aged seven, she told Vanity Fair: "Somebody noticed me, and then another person noticed. Somebody said as we were walking past, "Oh, that's Julia Roberts." "We all kept going, and then Finn said, "Yeah, my mom's Julia Robinson." That's what gives you perspective. It could be Robinson, it could be Johnson, because it has nothing to do with me as a person. Roberts became an international star in the 1990 film Pretty Woman but said young actresses now have it tough. There's the express elevator and there's rehab. It's so awful - nobody gets a fair trial-and-error period that everybody deserves and everybody needs.