And I thought it was unusual when I found quilting inspiration by a faux corset I saw at Hot Topic once. They should give you a blue ribbon for "Most Unusual Inspiration" and "Quilt Theme With Most LMAO"
The only remotely 70ish suggestion I have (as I wasn't alive in the 70's...or watch 70's porn for that matter) is maybe find some gold lame (or some sort of metallic fabric)...which I see typically used to make garrish bikini tops. If you have blocks that are framed or a border maybe use the metallic fabric for a thin inner border for some sparkle. Or give those sexy silluette cutouts someone suggested a gold thong. ;)