I have for you tonight dupes, of a sort, to show you, OPI's Gettin' Miss Piggy With it and Sally Hansen's Cha-Ching. Very superficially, these two are the same.
They're both red and silver glitters, and that's pretty much where the similiarities end. GMPWI is small, red glitters mixed with large hex, silver glitter in a clear base. CC is red and silver glitters of about the same size, denser, and in a clear base as well. Even at 3 coats, GMPWI would still look better layered over another color, whereas CC you could easily wear alone at 2 coats. I used no topcoat in my swatches, GMPWI on my index and ring fingers, CC on the other two.