Essie Bikini So Teeny is a cornflower blue creme. There's a very sparse silver shimmer running through it in the bottle but it's virtually unnoticeable on the nail. The formula is pretty good, it dries quickly and is easy to apply, but it's a little streaky. It took 3 coats to get it completely opaque and streak-free.
It's a pretty colour, but I don't have much else to say about it. It's a good staple to have in your stash.
Essie nail polishes are available at Myer but they're ridiculously expensive and have hardly any shades. I'd recommend ebay or waiting for them to come up on Ozsale/BrandsExclusive etc.