Kai had been dating Mia for just two weeks, but he was already smitten—head over heels, the kind of infatuation that made him want to shower her with gifts. She was petite but curvaceous, with soft hips and full breasts that strained against her tops in a way that drove him wild. The problem? He had no clue what size to buy her. Clothes shopping for a girlfriend felt like navigating a minefield, and he needed help.
That's where Elena came in—his stepmom. She'd married his dad five years ago, when Kai was eighteen, and now at twenty-three, he still lived at home while finishing his degree. Elena was in her late thirties, with a body that mirrored Mia's almost uncannily: hourglass figure, generous C-cup breasts, rounded ass, and a narrow waist that flared into hips perfect for gripping. She dressed conservatively—high-neck blouses, knee-length skirts—but Kai had caught glimpses over the years that lingered in his mind longer than they should.
One evening after dinner, Kai cornered her in the living room. "Hey, Elena... I need a favor. It's kinda weird, but hear me out."
She looked up from her book, her dark hair cascading over one shoulder, green eyes curious behind her reading glasses. "What is it, honey?"
"I'm buying clothes for Mia—my girlfriend—and I don't know her sizes exactly. You... uh... you're built kinda like her. Same height, same... curves. Could you let me measure you? Just quick, with a tape?"
Elena's cheeks flushed pink. She was a conservative woman—church on Sundays, modest swimsuits even at the beach. The idea of her stepson measuring her body felt intimately wrong, a flutter of something forbidden stirring in her chest. But Kai was sweet, pleading with those boyish eyes, and she couldn't say no. "Alright," she sighed, setting her book aside. "But just measurements. Nothing else."
Kai fumbled with the measuring tape he'd bought online, his hands shaking slightly as he approached her. She stood in the kitchen light, wearing a simple blouse and jeans that hugged her figure. He started with her waist, wrapping the tape around her midsection. His knuckles brushed her soft stomach through the fabric, sending a jolt through both of them. Elena inhaled sharply, the warmth of his fingers seeping through, making her skin tingle.
"Um, 28 inches," he muttered, voice husky. Next, her hips. He knelt slightly, pulling the tape taut around her ass. The curve of her cheeks pressed against his hands as he adjusted, the denim warm and yielding. Elena bit her lip, a strange heat pooling between her thighs. This was her stepson—family—but the proximity, his breath on her lower back, ignited something dormant.
Bust was the killer. "I need to go over... here," he said awkwardly, looping the tape around her chest. His arms encircled her, tape pressing firmly against her breasts. Elena felt her nipples harden instantly against the lace of her bra, traitorous peaks rubbing the fabric as he pulled tighter. Kai's face was inches from her cleavage, his exhale warm on her skin. She smelled his cologne—clean, masculine—and felt his fingers graze the underside of her breasts while "adjusting."
"36 inches... I think," he stammered, pulling away too quickly. His jeans tented obviously now, and Elena's eyes flicked down before she could stop herself. A thick bulge strained against the zipper. Shame flooded her, but so did a dark, throbbing ache she'd buried since her husband's long business trips left her untouched for months.
The measurements were a mess—his hands shook too much, numbers inconsistent. "This isn't working," Kai admitted, rubbing his neck. "What if... we go to the mall? You could try stuff on, and I'll see what fits. Like a personal... mannequin?"
Elena hesitated. The idea was absurd, improper. But the earlier touch lingered on her skin like a brand, and part of her—the lonely, neglected part—craved more attention. "Fine," she said softly. "But just clothes. Nothing crazy."
The mall was bustling, but they found a high-end boutique with private fitting rooms—large, mirrored stalls with plush benches and locking doors. Kai piled outfits into her arms: dresses, tops, jeans... and then, impulsively, a section of lingerie. Lacy bras, thong panties, sheer babydolls. "For reference," he said with a grin, though his eyes darkened with something hungrier.
Elena's heart pounded as she entered the fitting room, Kai waiting outside. She stripped slowly, the air cool on her bare skin. First, a sundress—silky fabric sliding over her curves, hugging her breasts and ass. She stepped out shyly. "How's this?"
Kai's gaze raked over her, pupils blown wide. "Perfect. Looks amazing on you." His voice was low, appreciative in a way no stepson should sound.
Back inside, more outfits. A tight blouse that gaped at the buttons, revealing lace bra edges. Skinny jeans that molded to her thighs and ass like a second skin. Each time she emerged, Kai's compliments grew bolder: "Your body fills that out so well... Mia would look hot in it, but damn, Elena..."
By the lingerie pile, tension crackled. Elena locked the door behind her, heart racing. "Kai... maybe you should come in to help. Zippers and stuff."
He slipped inside without hesitation, the room suddenly smaller. Mirrors on three walls reflected them infinitely—her in just bra and panties now, him close enough to touch.
She tried a red lace bra first, fumbling with the clasp. "Can you...?"
Kai's hands—warm, steady now—fastened it from behind. His fingers lingered on her bare back, tracing the strap. "Fits perfectly," he whispered, breath hot on her neck. In the mirror, she saw his eyes fixed on her reflected cleavage, nipples visible through sheer lace, stiff and begging.
Next, matching thong. Elena hesitated, conservative instincts screaming. But the ache between her legs won. She slid her cotton panties down, exposing her shaved mound—smooth, glistening slightly with arousal. Kai watched openly as she stepped into the thong, the thin string nestling between her plump ass cheeks.
"Turn around," he said, voice rough.
She did, slowly. The thong barely covered her pussy lips, swollen and damp. Kai groaned softly, stepping closer. "Elena... you're so fucking beautiful. I can't stop looking."
Her breath hitched. "Kai, we shouldn't... I'm your stepmom."
But his hands were on her hips now, thumbs stroking bare skin. "Just helping," he murmured, but his erection pressed against her ass through his jeans—hard, thick, throbbing. The heat of it made her clit pulse.
She didn't pull away. Instead, she arched slightly, pressing back. "It feels... wrong. But good."
Kai's lips brushed her shoulder, tasting salt-sweet skin. One hand slid up, cupping her breast through lace—full, heavy, nipple rolling under his palm. Elena moaned, low and needy, the sound echoing in the confined space. Mirrors showed everything: her flushed face, his hand kneading her tit, fingers pinching the hard peak until she whimpered.
"Show me," he breathed. "All of you."
Trembling, Elena reached back, unhooking the bra. It fell away, freeing her breasts—creamy globes with rosy nipples, erect and sensitive. Kai spun her gently, mouth descending immediately. He sucked one nipple hard, tongue swirling, teeth grazing. Wet slurps filled the room as he lavished attention, hand massaging the other, pinching until sparks shot to her core.
"Oh God, Kai..." She threaded fingers through his hair, pulling him closer. Her pussy dripped now, thong soaked, the musky scent of her arousal thick in the air.
He dropped to his knees, hands sliding down her sides, hooking the thong. Slowly—torturously—he peeled it down, exposing her slick folds. Pink, puffy lips glistened with creamy wetness, clit peeking swollen from its hood.
"So wet for me," he growled, inhaling deeply—her scent intoxicating, sweet and tangy. Without warning, his tongue flattened against her slit, lapping upward in one long, slow stroke.
Elena cried out, legs buckling. The taste of her exploded on his tongue—salty-sweet nectar coating his mouth as he delved deeper, tongue fucking into her tight hole. He sucked her clit gently, then harder, fingers spreading her ass cheeks for better access. Wet, obscene sounds—slurping, smacking—as he devoured her pussy like a starving man.
She ground against his face, hips bucking, chasing the building fire. "Yes... eat me, baby... oh fuck..."
Kai stood abruptly, shedding clothes in a frenzy. His cock sprang free—thick, veined, at least eight inches, head purple and leaking precum. Elena stared, mouth watering at the sight—her stepson's massive dick, throbbing for her.
He pushed her onto the bench, spreading her thighs wide. Mirrors captured every angle: her dripping cunt, his cockhead nudging her entrance, slick with her juices.
"Say you want it," he demanded, rubbing the tip through her folds, teasing her clit.
"I want it," she gasped, conservative walls crumbling. "Fuck your stepmom's pussy, Kai. Fill me up."
He thrust in slowly—one thick inch at a time. Her walls stretched around him, hot velvet gripping his shaft. Elena moaned loudly, the burn delicious as he bottomed out, balls slapping her ass.
"So tight... fuck, Elena, your cunt's milking me."
He started slow—deep, grinding strokes that stirred her insides, cockhead kissing her cervix. Sensory overload: the wet squelch of her pussy sucking him in, skin slapping skin, her tits bouncing with each thrust. Sweat beaded on their bodies, the room thick with sex smells—musk, cum, arousal.
Faster now, pounding her relentlessly. Elena's nails raked his back, legs wrapped around his waist, heels digging in. "Harder... breed me... oh God, yes!"
Kai flipped her onto all fours, facing the mirror. He slammed back in, watching her ass ripple with each brutal thrust—cheeks jiggling, pussy lips gripping his pistoning cock, cream frothing at the base.
One hand snaked around, rubbing her clit furiously. The other pulled her hair, forcing her to watch: her face contorted in ecstasy, tits swinging, his thick shaft disappearing into her stretched hole over and over.
"I'm gonna cum," she wailed, walls fluttering.
"Cum on my cock, Mom," he grunted—the taboo word sending her over.
Her orgasm crashed like waves—pussy convulsing, squirting clear fluid down his balls as she screamed silently, body shaking.
Kai followed seconds later, burying deep. Hot ropes of cum painted her insides—pulse after pulse flooding her womb, thick seed leaking out around his shaft as he emptied.
They collapsed, panting, bodies slick and spent. In the mirrors, infinite versions of their forbidden union stared back—stepmom and stepson, lost in dark passion.
No interruptions. Just them, exploring the lust that would never stay secret again.