This one was a touch sheer for my liking so I layered it over Zoya Bevin, a beautiful sage creme.
Well I have been pining for Butter London's Tart with a Heart for some time, and happened upon what I feel is a near-perfect dupe at Sally Beauty, Nina Ultra Pro Holographic Top Coat. The name isn't as clever nor the bottle as fancy, but wow does she sparkle!
And a little blurry to show the sparkle.
So if you've been coveting the sparkly, saucy Tart with a Heart but want to limit your polish budget, definitely give Holographic Top Coat a go! Over anything, really!