Change your sister some more

You wait a few seconds before telling her without moving from your place "Sam I changed my mind. Come back here, I need a foot massage."

"Of course, Sir!" she exclaims, scurrying back to you. She seems overjoyed as she kneel down in front of you, remove one of your shoes and sockets and put your foot into her lap to take care of it.

"I wish she was more skilled at foot massage." Her caresses suddenly become way more pleasant. "I wish Sam's chest would start growing up to a G cup without her noticing any change. I wish she didn't wear any underwear and I wish her nipples would poke through her uniform. I wish her uniform would adapt to her new cup size but would be tighter and show more clevage."

You watch with a satisfied smile as your sister's tits start slowly inflating and the fabric of her top is put to a lot of pressure without ever being torned out. Your treated with the view of more and more of her bust, and her erect nipples trying to pierce their way out.

Sam starts unshoeing your other foot, oblivious to what is happening to her own body. "Is everything all right, Sir?" she asks with a soft smile.

"Yes, you're very skilled Sam." "I wish her hair were black and long enough to reach her hips and tied in twintails. I wish no hair had ever grown on her body bellow her neck and never would. I wish her skin was paler and her eyes blue. I wish she had a perfect hourglass figure."

To your marvel, you watch the already pretty girl you grew up with slowly turn into the hottest woman you've ever seen. She doesn't seem to notice any change and keeps smiling at you while taking care of your toes. "Would you like something else, Sir?"