She SO doesn't care anymore. This outfit says, "Whatever. I'll be surfing by noon tomorrow."
I think those pants are maybe too short, and I'm PRETTY sure we're not SUPPOSED to be seeing her navel as part of this outfit. I believe its original intentions are being mildly violated.
And this is just unflattering and insane. She looks like one of those ads for Burlington Coat Factory, or whatever, where they're like, "You can get ALL the current fashions for less," and you're thinking, "NONE OF THOSE ARE REAL FASHIONS."