As I was lucky enough to score a bottle at the airport and then got my hands on some Accessorize polishes from their online store I thought I'd do a comparison.
First up, ignore horrible state of my hands/cuticles. One day I will remember to apply handcream *before* taking the pics :-) And ignore the fluff (where does it come from?)
All of these pics are 3 coats of each plus seche vite top coat
Pointer & ring finger are BF, index and pinkie are Pink Spice
Sorry for so many pics but I wanted to show the polishes in different lights and from different angles.
In terms of application they were very similar, very sheer and uneven on the first coat and then the colour builds. If anything the Accessorize brush was better, my MAC brush was a bit fat and splayed at the end. Similar drying times too. The MAC brush was easier to hold though, the Accessorize one is like a fat stubby nails inc brush.
I can see the difference between the two, but most people, certainly what Liz Hurley would call the 'civilians' of the nail polish world, won't be able to tell!
So, in conclusion, for me they're not *exact* dupes, Bad Fairy has slightly more bling, like the sparkle/foil particles are slight bigger and in certain lights you can see the copper duochrome more in Bad Fairy.
But Pink Spice is a very close sibling and for the UK gals (and the limited countries that the Accessorize website will ship to) I think it's a damn fine alternative.