Students and faculty can only wear either tight or mildly revealing attire

You jot down,

Old Rule: Female students and faculty can only wear either fairly tight clothing, enough to strongly accentuate their body's curves and shapeliness, or revealing/skimpy enough to show off a good amount of skin, though not necessarily anything explicit.

Putting down your pencil, Mrs. Steven's voice tails not long after.

"Michael? What's that?"

"Oh, nothing," you begin to say, only for your eyes to pop when you turn your head back and notice what the cute -- no, hot young lady you only knew as your pretty, otherwise conservatively garbed English teacher is clad in before you now.

Her (formerly) conservative skirt has gone all the way up to her upper thigh, showcasing plenty of her lovely, light diffusing skin, and her red blouse, while still mostly the same, is now unbuttoned enough to make out her perky breasts' cleavage. Upon closer inspection, however, you suspect a more taut upper body than you remember, too. Only for you to realize that it isn't Mrs. Stevens' body that has changed, but the blouse! And you certainly don't remember her putting that on. It appears tighter around her self overall -- as if two sizes smaller than the one you'd just seen on her seconds ago. Her breasts definitely look nice straining against it, even for their perky C-cup size.

Mrs. Stevens is a looker! you silently confer. And you look. Like a doe-eyed deer, your eyes roam all across her body, as if you've forgotten where you are.

At least, until a pertinent "ahem" snaps you out of it. When you return to reality, a reality that, unbeknownst to anyone else, you've just somewhat radically changed, an arm folded Mrs. Stevens is sternly staring back at you.

"Where exactly do you think you're looking, Michael?"

Oh, crap! you curse silently. "N-nowhere, Mrs. -- "

"Either you tell me what you wanted to ask or I'll have you wait until after class to do so. I have a curriculum to prepare for today's lesson, which, if you aren't aware, starts in a few minutes."

After class, huh? That didn't sound good. "Sorry Mrs. Stevens." You pull back. Under your remorseful tone, however, you can't help reeling.

Mrs. Stevens' legs were hot! And looked so soft, and fit. Her thighs were creamy and slightly tanned... she definitely stayed in shape. Considering her new man it may be no surprise.

And she didn't even know she was showing them off! Not uncharacteristically anyway... this was just out of this world. Quietly, you plot your next move.