Hot Summer Job/Be nice to your sister
"You can't beg your way out of this... Don't give me those puppy dog eyes... Okay, okay, mercy, uncle, geez," you finally relent. When she piles on the guilt you can never hold your ground. "Then... take it off as far as you dare."
She smiles widely at you then peers down at her dress. She contemplates her options and starts to lift the dress upward but stops herself, looking uncertain where she could actually stop without taking all of it off. Then inspiration strikes her. She pushes the flimsy straps of her dress off of her shoulders and slips her arms free. It's a very well fitted dress and the top of it barely shifts at all through her movements. She looks up at you with a conniving grin.
"That's not very daring," you critique. "Really, is that as far as you'll go?" It's an almost rhetorical question with your fingers pressed up against her snatch.
Bree rocks back and forth as she mulls over your question. Maybe how horny she is determines her courage? After her cheeks redden some more, she quickly leans back and folds the top of her dress down. Bree lowers it just enough to show off the two bumps on her chest that barely count as breasts. But more intriguingly, her button-sized nipples are pointy and hard, the tiny nubs looking to be rather sensitive.
With her arms outstretched, holding onto your shoulders, your sister presses herself into your hand more forcefully. With her chest exposed she stares into your eyes fiercely, even if you can't seem to return her gaze.
After another moment Bree grunts and throws her hands down, pushing her yellow dress as far down as she can. She slides it well past her belly button, the crumpled top edge dropping to the top of her pelvis, limited by her widely parted legs. The dress still keeps your eyes off of where your hand already is, and keeps her from peeking at you in kind.
"There! I think that's... pretty daring!" Bree declares. Her legs twist around your midsection as one of her hands daintily roams across her taut stomach.