I've been looking for this polish for ages and finally picked it up this weekend! Teenage Dream is from OPI's recent Katy Perry collection. It is a cotton-candy pink loaded with silver shimmer and big flecks of rainbow glitter! I'd noticed from other blog posts that it seems to be sheer, so I layered it over Sinful Colors' Easy Going, an almost-white pink that helped to make this solid. What you see is one coat of Easy Going topped with 3 coats of Teenage Dream.
Click to enlarge.
I also took a video of this in the sun so you could see how it sparkles and shifts.