Alan Cumming and Neve Campbell, who co-star in the new movie musical "Reefer Madness," are sporting some illegal smiles in the May issue of High Times.

While Campbell doesn't come right out and admit to smoking the ganj on a regular basis, she does tell the mag: "Well, I was just in Amsterdam [where pot is legal]. My mother is from Amsterdam, so marijuana is definitely something my brother and I were exposed to growing up."

Cumming's grin says it all in the photo, in which he and Neve are smoking hand-rolled cigarettes. And according to a High Times rep, "They were definitely smoking pot."