Tell her to keep the bra off, and wear a button up blouse.

"You won't wear a bra to school tomorrow," you say coldly, in a matter-of-fact tone of voice. Sarah looks up at you with a shocked expression.

"But..."

"And you'll wear the same blouse you had on when the boy in this room felt up your big tits. I'll expect you by my locker for an inspection after lunch. If you can get away with it, I'll even allow you to wear your bra through lunch, though when we meet, you won't be wearing one. Are we clear?"

Sarah looks shocked, and you allow your hand to grip at her left breast, squeezing it gently. Sarah breathes in deeply and sighs. You prompt her. "Are we clear?" Sarah shudders and then looks up with crystal clear eyes.

"Yes," she says, in a tone that matches her gaze.

"Yes, what?" you ask. Sarah allows herself a small smile.

"Yes, sir." You grin back at her stroking her hair with the hand not full of her breast.

"Good girl. And Sarah, you're not to tell anyone what's happened here. Do what is asked, and I might give you a reward tomorrow." You feel yourself taking the dominant role more easily, wondering if Sarah will be responsive. She makes no move to remove your wandering hands as you explore her ample chest, though you feel no rush to remove the sweater. When you finally do remove your grip from her breasts, you notice that her nipples are pushing through the fabric rather prominently. You find yourself unable to look away for a few moments and when you look at Sarah, she's got a knowing grin.

"Do you like my tits, sir?" she asks playfully. You nod. To prove your point, you pull on an elongated nipple.

"I'm going to enjoy these," you say. Sarah grins, showing you emotion, and relieving the tension. "Tomorrow, at my locker," Sarah nods, a questioning look slowly creeping over her face. Deciding to take yet another liberty, you lean over the sexy girl and kiss her softly on the lips. She responds, gently nibbling your lips with her own. She's even a good kisser, you note. Sarah begins to get up then clutches her arms around her, hiding her hardened nipples. You pull both arms down and shake your head.

"My parents," she whispers. You shrug.

"What are they doing right now?" you ask her, putting on your 'mean' face. Sarah immediately understands.

"Probably watching tv, maybe a movie." You nod.

"Then you'll walk me down quickly and scamper back up here." Sarah immediately lowers her head in a gesture of submission that makes your mouth dry. You pull the door open and adjust your cock slightly, going downstairs. Sarah runs fast down the stairs behind you, something you regret, as you can't see her liberated tits bouncing to and fro. You pass the living room, where, sure enough, her parents are watching some news show. You thank them both for the hospitality and stretch it as long as seems comfortable, making Sarah squirm. Sarah smiles and cheerfully says goodbye, her arms carefully covering the hardened tips of her boobs.

"See you tomorrow," you say emphasizing the final word. Sarah nods her understanding and closes the door behind you.