I've been experimenting with sponging lately and this is another one of my attempts.
The base coat is Sinful Colors Social Ladder - which is a very sheer pink sparkle. I wish my nails weren't stained because this is such a pretty delicate pink.
Then I sponged over the tips using a cellulose sponge and Sinful Snow Me White. I topped it off with some subtle stamping with Sally Hansen insta-dries in Pink Blink and Peachy Breeze.