She doesn't know.

Blushing furiously at her nearly naked state as the cheerleaders behind Abbey tried to contain their mirth, as they shared the photographic evidence of the two upraised asses throughout their gossip groups.

One girls phone was trained on the pair of unintentional exhibitionist. Facebook live streaming their exposure to over a hundred people and growing. The others thumbs were a blur only pausing to frame a quick photo, before resuming their dance around the glowing touch screen.

Abbey's shorts were now nothing more than a mockery of coverage, her cheeks and hips fully protected from view by the now much less strained material, while her slit was completely exposed anytime she so much as leaned forward.

Their instructor had a bit of a sadistic streak especially when it came to those who challenged her authority and Jenna had done just that during a lecture on body positivity and decorum. As an enlightened educator she was passing on the wisdom of ideas such as the free the nipple movement but shunned the blatant exhibitionism of things like the nudity on show during pride parades. Jenna had countered that the human body was natural and shouldn't be hidden if the person didn't want to. She had shut her down by inviting Jenna to attend her class naked anytime she wanted for double extra credit. The class had laughed as Jenna turned crimson... So technically it was her fault the naked coed was currently drawing so much unwanted attention to her class.
She had to give it to Jenna, the young girl clearly had confidence in her body to be so brazen. She had not expected her to turn up in the buff at all and had surely expected her to balk at the warm-up.
As she wandered around the class critiquing form and handing out praise where appropriate she quickly discovered Abbey's wardrobe malfunction on one of her rounds. The poor girl seemed much shier about her nudity than Jenna judging by the deep blush on her freckled skin. Jenna meanwhile was calm as if she had been fully dressed, making flirty eyes with a shirtless male student in the next row. Perhaps that was her in to break Jenna... Embarrassment by proxy...

Over the next several minutes Professor Whiteside ran the class through exercise after exercise designed to show off and worsen Abbey's split shorts. By the time the next water break came about the split was everything but the thin waistband of her shorts.

Abbey was a bundle of nerves and embarrassment, as she was led through different variations of back-bends splits and toe touches. The humor that she dyed her hair was officially put to rest as the thin racing stripe of red hair over her pink slit was broadcast to an audience comprised mostly of -former- classmates but some students from her class and the junior class below her were also in the growing audience currently more than 150 strong.

Abbey of course had no way of knowing about this, she was somewhat concerned with the camera phone trained to her back/side but a lot more immediately concerned with the 30 or so people watching live.
She took a large amount of strength in Jenna's calm. Yet even still she cringed every time she felt the fabric sliding on her ass and her crack being exposed once more.

Taking the split and workout as a sign from the universe that she shouldn't half ass this support for her friend and self pride. During the next water-break and without fulling thinking through what it would mean Abbey slipped off the waistband of her ruined yoga shorts. Now standing completely naked by choice instead of allowing her clothing to decide when she showed what. Just like her mentor... Or at least that's what she told herself.

Now it may come as a surprise to anyone who hasn't had both experiences. But the alarm bells in your mind from exposed downstairs bits, are not the same as completely naked in a public setting.
Every little wind gust and glance her direction reminding her of her nudity.

In the ensuing weeks the Gif of her dropping her shorts with a full yoga class getting water behind her would become one of her most popular images.

Nearly naked to naked was a hell of a jump. Her embarrassment and excitement were almost too much to handle as she glanced down at her naked self and then over at her equally naked mentor. Proud of herself for having this bonding experience. She pushed herself to get back into position and continue with the next exercise.

Jenna for her part could not believe how far off from the high standards, studious, kindred-spirit she had known well a few years back. Her friend had clearly become something of an exhibitionist hussy literally shaking her ass for any who wanted to look...Jenna smiled to herself remembering the disagreement she had had with her professor and Abbey joking on her facebook post about willing to go if Jenna did. Jenna was embarrassed by proxy to see the shiny naked teen contorting herself for the class. Jenna really needed to have a talk with her about proper decorum in public...people knew they were friends after all. Jenna didn't want to associate with some kind of pervert.

Still oblivious to her own nudity...But perhaps not for much longer...