I was going through my nail polish collection this past week, and two stuck out immediately. Why, you might ask? Because they looked absolutely identical in the bottle. I'm talking, of course, about M.A.C Formidable (from 2010's Venomous Villains collection) and Orly Galaxy Girl (from Fall 2010's Cosmic FX collection).
On the index finger: M.A.C Formidable!. This is three coats. The formula on this one is very thin -- even with three coats, I had to swirl it around a bit to make it apply evenly.
On the middle finger: Orly Galaxy Girl. This went on perfectly in two coats.
As you can see, these two colors are exact dupes. I was actually pretty surprised to discover that they look completely the same in the bottle as well as on the nail! The color is a rusty purplish brown packed with teal shimmer.
M.A.C Formidable! is long gone, since it was part of a limited-edition collection. Orly Galaxy Girl is still available for $10 at beauty.com.