Forbidden World is actually a rip-off of Alien. The movie isn't particularly good but not exactly bad either (ok, it's pretty bad), but there are four reasons to watch the movie: two of them belong to June Chadwick and the other two belong to Dawn Dunlap and they're called boobs.
I'm just going to concentrate on Dawn Dunlap's pair today because I find it hard to concentrate on anything else when confronted with such a nice set of space-boobs. She first got naked onscreen at the age of 16 in the movie Laura which has the Plot Keywords "no panties" and "vagina" on IMDb so you know it has to be good. She also had roles in (obviously) Forbidden World, Night Shift, Heartbreaker and Barbarian Queen before saying, "Fuck this shit," and moved back to her native Texas after a six year career in film. At least I'm guessing that's what she said.
So here she is in Laura:
And here she is in Forbidden World: