Bored Little Girl/Pool
"Okay!" replies Jackie. To your surprise, she shamelessly pulls her dress up and over her head in one smooth motion, exposing her preteen chest to you fully. Now wearing only her white panties, she smirks at you before bounding excitedly over to her closet to find a bathing suit.
You sit there for a moment, dazed at the sight. You've seen you older sister naked before, of course, but ever since puberty, Jackie had become more conservative about showing her body around you and your parents. What's different now? you wonder. Catching glimpses of her while she rummages through her clothes, you admire the slight domes of her breasts, each crowned with a puffy pink areola and nipple. Occasionally she glances your way, almost obviously, and you wonder for a moment if she's doing this to tease you on purpose.
But then you decide, no, it's much more likely your sister just doesn't notice the effect that showing her developing body has on you. You're blood-related, after all, so she probably isn't too worried about her nine-year-old sister lusting over her. You decide to take advantage of that ignorance.
With her back to you, Jackie rifles through a set of small drawers in her closet. You can't see her breasts but she does give you a nice view of her panty-clad bum, which had also started to grow in recent years. You've never really understood men's obsession with asses, but for some reason today, you feel like you just might be beginning to understand.
As much as you want to stay and watch your sister reveal that tempting round bottom to you, you decide it would probably be better for the whole "trying not to freak her out" thing if you went and got changed into your swimsuit as well.
You get back to your room and pull down your shorts, causing a string of clear, sticky juice to stretch between the crotch of your shorts and the soaked gusset of your panties, only breaking off when your shorts hit the floor. You quietly giggle to yourself and play with the dangling strand of juice left dribbling from your panty-covered pussy lips, moving your hips side to side and swinging it back and forth, further and further until it sticks to one of your legs.
Smiling to yourself, you try to wipe it off with your fingers, but it's too slippery, only smearing around your coltish bare legs. You like the feeling of its silkiness, but you realize you have to actually get changed. You grab a tissue and wipe up the dripping wetness off your legs and the outside of your panties, then another to wipe your bare pussy after dropping your drenched panties to the floor, on top of your shorts. Looking down at them, they're all gooey on the inside, and you feel something almost akin to pride. Then you step out of both and toss your shirt onto the pile of clothes. Fully naked, step one is now complete and you're feeling great. On to step two: it's time to pick what you're going to wear to the pool.