Pink Fizz was one of two promotional colour offered as part of a special deal with Dove body products I think. I picked these up on ebay. I think the other was Mulled Wine...
It's a mini 4ml bottle and has a plastic silver lid rather than the usual metallic finish ones.
The colour is a pretty standard dusky pink creme, and I'm sure it would be pretty similar to an existing Nails Inc colour if I did a comparison.