If you haven't seen Prime Cut...check it out, it is certainly worth watching. Of course, Lee Marvin and Gene Hackman do their thing and the movie is fantastic. However, the presence of Sissy Spacek in her introductory film role raises it to a whole new level (as if the movie wasn't good enough already). She looks great in the movie, displaying a youthful exuberance and giving off such an overtly sexual vibe, it's no wonder she became so famous. Internet image searches are already overrun with pictures from this fine performance, but nevertheless I felt it necessary to throw a few more out there.
Click these images of Sissy Spacek in Prime Cut to see them full size: