She only had a moment to react to the animal chosen to her, which was a 3-headed red dragon. She yelled in frustration, thinking the app saw her as ugly, before the red scales began to cover her body. Rihanna watched as her arms cracked and reshaped themselves, forming into front legs of a quadruped, and her thumbs slowly dissolved into her palm as the other 4 grew claws, the scales covering the "new" toes.
"Calm down, Rihanna," Stephen said, noticing that she was freaking out.
Rihanna angrily replied, "How am I supposed to calm down? I'm becoming a--" She was stopped by her voice box, which changed itself, and the rest of her comment became a low rumble.
The scales went up her neck as it began to stretch, the scales covering less and less of the neck as it continued to stretch outwards. It soon stopped, her neck a lot longer than before. As the scales continued up her head, she let out a roar that wasn't loud, but wasn't too quiet, either. She shut her eyes in pain as they changed, her brain also changing to fit a dragon's instincts. She opened her eyes, and she could see much better. Her pupils had become slits, and everything else in the eye was yellow.
"This is amazing..." Jake said, smiling.
The changes to Rihanna's face and head continued without restraint. Her hair receded into her head as her nose sunk into her face, the nostrils becoming bigger as her head also became slightly bigger. Her teeth became sharper, for a canine's diet, and a new organ grew inside of her, which allowed Rihanna to breathe fire if she wanted. Her face pushed out into a snout. The scales had finished with her head now, and she stood on all fours to see if it felt good. It didn't yet, but she knew it would once her feet changed, too.
Rihanna was interrupted from this little break by a pain in her shoulders. Immediately after, two heads grew on each side of her own, one with blue instead of the yellow and the other with red. Rihanna looked at both of them, surprised at how she felt three people in her body at once including her.
The changes didn't stop, though. Rihanna's body had been fully covered by the scales, and she had now become a few feet longer, as an extremely large tail grew from her back, knocking Alan to the side.
Her legs and feet were the last to change, and she let out an uncomfortable groan as her legs cracked and reshaped for a quadruped stance. Her feet each lost the big toe, and the smallest toe moved to the ankle. Sharp claws grew from each toe.
"Well, that was an...adventure..." Alan said. "Now Rihanna's too big to fit in this room..."
Jake carefully got over to the desk, and scanned his face. "I'm going next," he said.