If Justin Bieber Does Smoke Pot, Here Are 17 Celebs He Could Blaze With! (PHOTOS)

Oscar winner Natalie Portman told EW she "smoked weed in college." (FYI, by "college" she means "Harvard.")  She's given up the habit these days, but it's not because she didn't like it: "I’m too old. I wish I was that cool, but I’m like an old lady now." She does retain her love of stoner comedies, though, which explains her starring role in the high-minded Your Highness.