The 1987 film Hunk was a comedy in which a nerdy male does a pact in order to become... well, a Hunk. I can't speak for the whole film, I couldn't get too far into it. However, if interested in male oriented material, there is actually a decent amount of process and special effects given during his transformation if you are interested in male TF.
https://www.youtube.com/watch?v=iHXFpWT8cds