Just call it Portman’s pot-free youth. Natalie Portman, who stars opposite Tobey Maguire and Jake Gyllenhaal in the upcoming film Brothers, describes herself as a bit of a late bloomer in the Jan. 2010 issue of Marie Claire. “OK, so I didn’t really go to high school parties,” she tells the magazine. “I didn’t touch pot ’til I was in my 20s. I didn’t get flat-out drunk until I went to college [Harvard]. But I think that’s a good thing in many ways.”