Wet n Wild Behind Closed Doors is pretty close to Ruby Red slippers. The main difference in the bottles I have is that the Wet n Wild is a little harder to apply and there is a some variation in the color of the red hex glitter.
Thanks so much for the comparison!!! I had no idea, and am now even happier I have the WnW - way to save me $16. Plus, I picked up Revlon Facets of Fuschia yesterday because someone posted it's a near dupe of Bad Romance. These are awesome finds - I'm not a huge fan of glitters in general, and they normally sit in my collection to be admired/rarely worn (I think I've worn Across the Universe once in the 3 months I've had it). Would much rather have these less expensive versions sitting around unused!