Shown here is three coats of Wet 'n Wild Fergie XoXo, with two coats of Zoya Caitlin as my base. There is a lot of clear base in this polish and the glitter doesn't cover very well. At three coats there are still a lot of little spaces where you can see Caitlin.
When I picked up this polish I thought it could be a dupe for Butter London Lovely Jubbly. While at a glace it looks similar, it's not. Lovely Jubbly is a mix of magenta microglitter with some blue, red, and gold microglitter sprinkled in.
Shown on my ring and pointer is three coats of Butter London Lovely Jubbly over two two coats of Zoya Caitlin; the other fingers are XoXo. This is a very densely packed glitter that covers very well. Opaque at two coats, it's a whole lot of micro glitter in every stroke of the brush.
In case there was any lingering doubt in your mind as to a dupe, here's a close up:
Not really close at all.