It was a blistering summer day, and both James and Katie were on summer break. Since it was Friday, their parents were at work, as usual. Their parents owned a business and worked together there, and this was a tedious week as new clients were pouring in. James has dark brown hair and eyes, dimples, and a muscular stomach. However, he remained a virgin and didn't have any luck with girls his age. In fact, the farthest he had gone with any girl was a light kiss. Katie, his sister, is 24 and is currently tanning outside near the family's pool in a sexy, revealing black bikini. She isn't very athletic but is still in great shape. Her curvy butt was sexy and seductive, and she often got stares when she walked by, from women as well as men. They also enjoyed looking at (and for the men, usually masturbating to) her 36C boobs. She liked to use this to her advantage (and also for pure pleasure from getting stared at) by wearing short skirts that left little to the imagination and low-cut, tight tops that hugged her curves and revealed most of her cleavage. However, this did not detract from her facial features: dark brunette hair, greenish-blue eyes, and enticing, full lips.
Having just turned 18, James was raging with hormones and often very horny. As it turns out, his room faced the backyard, and he could easily see his sister tanning through the window. He noticed that her eyes were closed, so he took advantage and pulled out his already hardening member. He started stroking slowly, savoring the moment. After a few minutes, he was rock hard. Just then, his sister sat up, but because she was facing away from the house, he had a few seconds to close his blinds and shove his cock into his shorts again. A minute later, he heard the back door close as Katie walked inside. She went to her room, picked out a lacy blue bra, matching panties, a tight blue tank top, and a pair of yoga pants. Then she stripped off her bikini, threw it onto her bed, wrapped herself in a towel and went into the bathroom, taking the clothes she had picked out. She was very hot after being outside under the sun, so she turned on the cold water immediately and stepped into the shower, without remembering to fully close the bathroom door.
Upon hearing the shower start, James quickly sneaked into Katie's room and saw the bikini on the bed. He pulled his cock out once more, and started jerking off with one hand, his other hand holding the bikini bottoms up and sniffing them. He smelled a faint scent of his sister's pussy, and this served to make him even hornier. Then, he wrapped the bottoms around his dick.
"Oh fuck," he moaned as he rubbed the cotton on his member, which had become fully erect. A little pre-cum oozed out of his dick and onto the bikini bottoms. He remembered not hearing the door shut in the bathroom, so he put the bikini bottoms back on the bed then walked into the hallway. His suspicions were correct: the bathroom was unlocked, and he took advantage by sneaking in. His sister was still taking a shower with her eyes closed as she hummed to herself and enjoyed the cold water. James got to see his sister naked, but not for the first time, as he had sneaked in the bathroom before. His boner came back as he saw the water cascade over her large breasts, her nipples sticking out.
Seeing her boobs and nipples, he thought of a new idea. He quickly went and picked her blue bra up, and knowing she was going to wear it, he rubbed his dick slowly on the inside of the cups. Then, he heard Katie moan softly, and saw one hand playing with her nipples as the other slowly circled around her pussy lips. Just as she inserted a finger into her pussy, he started stroking himself, holding the lacy bra in one hand. He matched her fingering with his stroking, and soon he was approaching his climax. Katie was moaning louder than before, using one hand to finger herself very quickly and the other hand to play with her tits. He stroked faster and faster, while realizing that he was going to cum soon and he needed something to catch it. He remembered the bra again, so he held it in front of his dick as he jerked off furiously. Just as Katie yelled out when she started to orgasm, James moaned and started to cum, shooting his load into both of the bra cups, and a bit on the straps. A final rope of his jizz shot out and landed on the matching blue panties. He picked the panties up, used them to clean his dick quickly, and finally sneaked out of the bathroom and into his room, putting the panties and bra back where they had been.
Katie, having just orgasmed, pulled her fingers out from her pussy and brought them up to her lips and sucked on them gently. She always loved tasting herself after cumming. Finally, she finished showering and dried herself, she got out of the shower and started to get dressed. First, she picked up her bra.
"What the hell is this?" she asked to herself when she noticed the liquid and wet spots the cups of her bra. She lifted it up to her nose and sniffed curiously, then recognizing the smell, scooped most of the cum up with her fingers and licked them clean. Realizing that she and James were the only two home, she knew that it must have been him.
Fucking pervert. Oh well, I can't just walk out without a bra, she
thought as she put the bra on, the remaining wetness of the cum on the cups smearing all over her tits and nipples.
This does feel nice though... I guess I'll wear it the whole day.
Katie then picked up her panties from the floor, and noticed some cum on it too.
Well, I already have his cum all over me
, she giggled softly to herself as she pulled the lacy blue panties on.
I'm such a naughty slut, I have my baby brother's jizz all over my boobs and pussy, and I'm loving it.
Giggling again, she put on her tank top and yoga pants, adjusting them so they showed her curves as best possible. Finally, she walked out of the bathroom and went downstairs to the kitchen.
