Her panties distract her.

Once she closed the door to her house and started jogging to the bus stop, Kim began noticing a few problems with her outfit. First off, she started feeling just how tight the panties were. The fabric stretching while pushing into her crotch, gradually inching it's way into her butt as she jogged. The second problem was her skirt. Normally, it wouldn't bother her with it's short length, however given her other predicament, not to mention the childish patterns on the panties, Kim really did not wish for anyone to see under her skirt. Not to mention, the weather was a bit breezy. As she decided it might not be best to jog, her panties suddenly, and without warning, slipped the extra distance and shot their way in between her cheeks. "Eeep!" The girl yelped, not expecting the sudden sensation of her panties pushing their way in her butt crack. What before were panties now became a tiny thong, two sizes too small. With that, Kim stops in her tracks for a moment in shock. Her thoughts are to fix it, but after looking around, she's unsure where to do so in public with people watching.