I agree with everyone: Butch is not the word that springs to mind for me. I am not a big fan of the shirt on its own (the sleeves issue) but I think it looks fab with the jacket, and I love the fit of the jeans. With the cuffs and the boots, there is definitely a cowboy thing going on, but I happen to love a cowboy look, so I am into it :). I agree with Una about your hair too. If you had a crewcut, then this might look a bit more butch.
Looking forward to seeing Angie in some baggy denim! Loved your comment, Zap, about Obi Wan and Luke!