Seriously? OMG! WTF?

Ariana Grande is so popular these days that Swarovski asked her to be their Global Brand Ambassador.

The actress shot a commercial for them wearing a Swarovski Couture dress and iconic Millenia jewelry, and she never shined as bright as she did here. But it could be because of all of those shiny crystals.

If you like what she is wearing (minus the dress), you can check out the Swarovski Holiday collection here. And this way, you too, can be the Glinda of the ball!