The shell continued to glow, and as much as Maria wanted to toss it into the waves, her hand wouldn't allow her. The shell began to feel warm in her hand, which soon spread all over her body. What she saw next surprised her. Her shoulder length hair was growing and getting longer. It seemed to be getting thicker and more gorgeous. Her fingernails also grew longer, looking much like her older sister's, Julie.
At this point, Maria attempted to run back to the house. She made it a few yards before her legs gave out on her and she came crashing down into the sand. Her legs burned and ached. She sat up and was able to see her legs growing longer. Her thighs and calves were filling out. She soon felt her ass fill out as well. Her hips were widening, causing some strain on her swim suit. Her tummy stretched as her torso began to grow like her legs. Her suit took on the strain, becoming increasingly tighter. Her waist remained thin as her arms also lengthened. Her face felt warm as her lips filled out, her cheek bones became more pronounced, and her face became more womanly.
Maria took this opportunity to stand up. Her balance was off since she had just grown from 4'3" to 5'4". She steadied her self and gasped at what she saw. From her view, the ground was too far away. her hips were HUGE and her ass... enormous. Her legs were long and sexy and her hands were definitely womanly.
Suddenly, her chest got very warm. She knew what was coming, and braced herself for the changes. She watched as her nipples got larger and became erect. She could see them tenting her swimsuit. She watched two mounds became visible, slowly pushing hers swimsuit out. She wondered how big she was going to get.
Maria's sister was a healthy 34C. Maybe, she would grow bigger.
Maria continued to watch as her boobs got larger. They fought for every square inch of space in her swimsuit that was too many sizes too small. She gained more and more cleavage. Her new boobs were soon beginning to puff out of the neck of her suit. They were getting huge. They had to be bigger than her sister's now. But they still continued to grow. Maria's swimsuit was now beginning to hurt as the seams dug into her shoulders and back, all from her expanding tits.
Maria was able to pull her boobs out of her suit, one at a time. Then she could take the shoulder straps off and roll the suit down to her waist, leaving her topless. She marveled at her boobs. They were heavy and they bounced and swayed with her movements. They were still getting larger, becoming more than one hand could cup. They tugged at her chest as slowly, their growth stopped. They were huge! They looked especially huge on her skinny, 5'4" frame.