Oh well, let´s see... I was just kidding a bit. I knew it must be something like magic but that expression has no sense at all in Spanish. Reading all your explanations, the only thing that could be similar to that is "polvos mágicos". That´s what the little fairy in Peter Pan needed to fly (sorry, I watched the Spanish version and there she´s called "Campanilla" something like little bell, and I have no idea how you English call her). And that, in English would be Magic dust... nothing to do with Stars but with magic. But still, that magic dust is just to make magic, not to amaze anyone, so, no, we have no expression like that in Spanish...
And no, I never saw that vid before, thank you!!!!