You get to see more than you expected

Caitlyn pushes herself off the counter and saunters towards you, her hips swaying hypnotically with each step. The slit in the robe keeps revealing tantalizing glimpses of her shapely leg.

Caitlyn notices your eyes roaming over her body and she smirks. She adjusts the robe to cover herself more, but the movement only serves to draw attention to her curves. "You're such a perv, little brother," she teases, but there's a hint of something more in her tone.

"Huh?" you react in a defensive manner. "I am just wondering why you are wearing mom's robe" you ask trying to get yourself out of trouble. "Oh, this thing?" Caitlyn says, gesturing to the robe with a lazy wave of her hand. She looks down at the garment, then back up at you, a mischievous glint in her eye. "I found it in the laundry basket and it smelled like mom, so I thought I'd give it a try."

Before you can respond, Caitlyn laughs and pushes past you, heading towards the kitchen. The movement causes the robe to fall open, giving you a brief glimpse of her bare bottom. The time stops in your head, you can't believe you are looking at your step sister's perfectly round ass. You can feel your mouth water. Suddenly, you snap back to reality when the robe swings back and covers Cait's ass in soft satin. "Ye...Yeeah... you look just as good as mom wearing this" you respond.

"Just as good as mom?" Caitlyn says, glancing over her shoulder with a smirk. "I'll take that as a compliment." She turns and walks into the kitchen, the swish of the robe's fabric following the curves of her body. You follow, drawn by a combination of curiosity and something you can't quite name. As you enter the kitchen, Caitlyn is leaning against the counter. The robe has slipped off one shoulder again, and the top of her breasts are visible above the lace trim.

Caitlyn laughs and shakes her head. "No, I don't think I could ever match mom's looks. She's got a natural beauty that's hard to beat." She takes another sip of her coffee, eyeing you over the rim of the mug. "But I do think I've got a few things going for me, don't you?"

She pushes herself off the counter and saunters over to you, her hips swaying with each step. "Like what do you think, little brother? Do I have any assets you can appreciate?" Caitlyn leans in close, her face just inches from yours. You feel like you are being interogated. You can't get the mental image of your sister's ass out of your head. You take a deep breath and say "Ofcourse you do...your eyes and lips are beautiful!"

Caitlyn blinks in surprise at your sudden outburst, then bursts into laughter. "Beautiful eyes and lips? Geez, little brother, you're such a charmer!" She playfully swats your chest with the back of her hand. Still giggling, Caitlyn takes a step back and twirls around, the robe flaring out around her legs. The movement reveals a tantalizing glimpse of her shapely thighs and the curve of her ass. "But you're right about one thing," she says with a wink. "I do have beautiful eyes and lips." Caitlyn leans in close again, her face mere inches from yours. This time, you can feel the warmth of her breath on your skin.

You look at her again, then hear footsteps on the stairs.