I know this is boring, but it's a pure silica face powder, probably Make Up For Ever's HD powder. And the reason she was buffing it into her face so feverishly is because it is pure white (though it does disappear on all but the darkest skin tones, who can use a peach colored variation), and if you're not careful, it can look like this in bright lights. Smile!
@sublimelazy: What kind of "discretion" should one have in a situation such as this? She wasn't being carried because of something potentially embarrassing to her, like her top secret bum leg. If she was, why such extravagant transport? And why not just say "Oh, how embarrassing and tacky to have mentioned it, but I had a reason. That's all I'll share."
Girl flew off the handle because someone observed her joyride and one person present isn't so afraid of her power that he might keep it to himself.
I love them? But I'm currently listening to a 35 minute Justin Bieber song and fantasizing about his future collaboration with Antony Hegarty and Nico Muhly. Maybe I shouldn't be trusted.
Does she really even care if anyone sees? She looks kind of great for a layabout junkie, and it won't mean shit for her career. Her inability to capably deliver lines certainly hasn't.