Cheryl decided that she wanted to modify multiple things. First, she wanted to be shorter. She thought it would be cute to be about 4'0" again. She wanted a C-cup chest, so she would feel mature.
Suddenly, the room felt bigger. Then it dawned on her. She was actually smaller. She shrank until she was exactly 4'0".
After that, her chest tingled a little bit. Then, she felt some pressure on her bra. She slipped off her shirt fairly quickly. Then, she slipped her bra off. her boobs grew until they were C-cup.
Then...