You are

"Very," you say, openly licking your lips as you ogle her exposed skin and hand her the newly untangled hose. "Now get the fuck to work while I start up the mower."

Nichole flips you off, but takes the hose and struts out into the driveway with it anyway. You check out her tight ass as she walks away, admiring the way the thong back of her bikini bottoms was tucked right up in her crack. You wolf-whistle after her, and she flips you off again over her shoulder.

It only takes you a few minutes to get the push lawnmower going, but by the time you leave the garage with it your sister is hard at work scrubbing the car.

On your first lap around the yard, Nichole is running the dripping, sudsy sponge along the side of the car, moving gently to keep anything from slipping. You couldn't have that, now could you?

"Come on," you shout at her over the mower engine, "put your ass into it!"

After a brief scowl at you, Nichole obeys, upping the pace and putting a bit more energy into her work. By your second lap, she's shaken both of her tits out of her string bikini top. She doesn't make any attempt to fix it or even cover herself up -- she's probably done the math and realized that this is exactly what you wanted to happen. She glances over as you pass by and catches you staring.

"Enjoying the view, pervert?" she shouts.

"You know it, sugar tits!"

On your third lap, Nichole is bent over the hood of the car, scrubbing the windshield. Her ass is pointing straight at you, wiggling back and forth as she works. She's up on her tiptoes as she stretches to reach, showing off the muscles of her thighs and calves and revealing the soles of her feet.

On your fourth and final lap, she's squatting next to the front tire to polish the rim. As you take the mower back into the garage, you catch a glimpse of her spread pussy lips slipping out of the sides of her skinny little bottoms.

You put the mower away and wait until Nichole finishes up, pulls in, and steps out of the car. She tries to hurry away to her bedroom to change, but you catch her by the arm.

"Come on," she whines, "I'm done!"

"Yeah," you agree, "so you don't need the uniform anymore."

Nichole raises her eyebrows as she crosses her arms over her still-bare chest.

You continue with as casual a tone as you can manage, "I'm about to start another load of laundry, so why don't you go ahead and give me that bikini now to save me a trip to your bedroom later."

"F-fine!" your bratty sister scowls, trying to hide her embarrassment behind her anger. She pulls off her top quickly -- not that it was covering much anyway -- and shoves it into your outstretched hand, but she hesitates when she reaches for the waistband of her panties.

"Hand them over," you say evenly, "or I'll take them off of you myself."

Nichole sets her jaw, looks you dead in the eye, and drops her bottoms to the concrete floor of the garage. Your own sister is buck-ass-naked right in front of you.

"There," she mutters, keeping her voice quiet to hide the slight quiver. "They're all yours."

You kneel down to pick up her discarded bikini bottoms, pausing a moment longer than necessary with your face level with and inches away from her uncovered crotch. She has a neatly trimmed bush, one small but thick puff of hair right above her pussy, which is glistening with water, soap, and sweat.

"P-pervert..." Nichole says weakly before pushing past you and bolting off into the house.