Ty got a sick idea from his new 'sister' Before she put on the skirt, Ty wished that Dustin would have DD-cup breasts
Dustin felt his, now her, nipples warm up. Her chest felt heavier "Wha-?" She squealed "What are you doing to me!?!?" The sensitive mounds grew larger and larger until they would be double D's on a regular girl. But on Dustin they were huge.
Ty began laughing at his sister's changes "You've been mean to me all my life" He paused to grope her new assets "I think some compensation is due" He grinned and wished Dustin to subconsciously like her new form. Next was clothing as his sister was still standing there naked. What should she wear?