Blake Lively's acting career is going up in smoke ... and in this case, that's a great thing!

The 24-year-old starlet, who plays the girlfriend of two pot growers (yes, two!) in the upcoming film Savages, get grilled in this faux interrogation interview in promotion for the flick.

Producers released this clip so that all the fans can get to know Blake's shady character.

Savages also stars Salma Hayek, Emile Hirsch, John Travolta, Uma Thurman, Benecio Del Toro, Aaron Johnson and the smoking hot Taylor Kitsch.

We can't wait to see this sexy cast in action! Click thru to see Salma's interrogation.