Your mom sits your little sister down for "THE TALK"...unfortunately your lil sis breasts aren't growing and your mom is So Embarrassed! Your mom has huge beautiful breasts and she can't believe her daughter is failing so miserably with her tiny perky A cups. She gently humiliates her daughter and makes her pull her tits out and begins groping and squeezing them to help stimulate growth. Your mom then starts sucking and slapping your sister's tits but still, there isn't much of a transformation. She then confides in her daughter her BiG SECRET....she uses YOUR SPERM to make her GIANT JUGS GROW!! You give her such beautiful big loads that really make her boobs swell up and inflate, they get so perky and round and balloonish and they feel so fat and full of milky jizz! Your sister wants beautiful huge breasts like Mommy's so she agrees and when they bring you into the room she can't wait to get your dick to grow so you can make her boobs grow in return! To get your cock rock hard and ready your lil sis plays with your Mommy's massive mammaries, groping and licking her nipples and sucking HARD and your dick gets SO FAT and ready to Fuck and Fill Your Sister. But first she sucks you off with her filthy slobbery mouth as she goes crossed eyed in delight, enjoying your sexy dick inside her mouth as your Mom instructs and encourages you both. Then your mom and sister lie back on the bed and your Mother cheers you along, making your sister take ALL of you inside of her really hard and deep so you really fill her up with your special big brother jizz. Your mom screams at you both, YES YES BREED YOUR LITTLE SISTER!! And you fill your nasty load so deep inside her. Mom and Sister are SO proud and turned on by you and they talk about how your sister's boobs are gonna grow so full and fat....and you can't help but get hard again and your Mommy dirty talks to help you nut again as your sister opens her mouth wide and wriggles her tongue begging for it. You cum a huge load and your sister plays with it on her tongue and face and rubs it into her tits...they're gonna need LOTS more milky jizz from you...better save up..mom and sis both want to be Bred and Get Even Bigger Boobies! Featuring mommy son roleplay, mommy daughter roleplay, sister brother roleplay, taboo roleplay, taboo fantasy pov, nipple sucking milf, nipple sucking big tits, huge boobs, growth fetish, transformation fantasy, begging, submissive slut, dominant mommy, small tit humiliation, sucking breasts, groping boobs, masturbation encouragement, pov blowjob, dildo sucking pov, spit fetish, missionary virtual sex, mommy joi, daughter sucking mother's tits, brother fucks sister, cum play, cum in mouth, and the lovely Annabelle Rogers, find her work at annabellerogers.manyvids.com.