I have been searching for glitter nail polish since Hawaii and recently found exactly what I wanted at a fabulous nail salon called, Sundrops Nail Spot in Phoenix, AZ. Deborah Lippmann is now my go-to glitter-ati nail polish now!:) I recently bought Happy Birthday and Superstar. The trick is to apply the first coat and wait 10-15 minutes and then add the second coat. For Superstar I think you can do this alone and with one coat...but, with Happy Birthday it's definitely fun to put this on top of another color and you will need two coats.
Added bonus: The nail polish contains biotin~I take this vitamin to help my nails and hair grow...go figure!
Plus, check out the celeb-inspired colors! There's one for SJP---I need that one! It's sold out on the Deborah Lippman page, but you can find these colors at Barney's & Nordstrom, so good luck!