What it did was cause her breasts to grow.
After the pleasant warmth of the ray faded, Jennifer's bra started to feel uncomfortably tight. She tried to adjust it, but found that the sensation was only getting worse.
"What the hell?" she said as she noticed her breasts swelling up over the top of her bra. "Crap, I can't breathe!" she gasped as she stumbled back into her house. Frantically, she clawed at the hooks on her back, trying to escape her constricting underwear. The pain grew unbearable. Suddenly, the bra exploded apart, releasing her swollen breasts, and she could breathe easy again. "Oh God!" She panted, "That feels better."
But, as soon as the relief faded, she noticed that she had a huge problem. Two huge problems in fact. Her tits were the size of volleyballs. They hung from her heavily but firmly, holding their rounded shape even without support. Besides their size, they did not look fake. She examined them curiously. Her hard, brown nipples poked out two inches, each one an inch wide. Her aureola were the size of CDs.
Jennifer stared at her chest. It was horrifying. It was amazing! She walked to the nearest mirror, feeling the weight on her chest bounce and shake with each step. If she had been turned on by her reflection before, then she was absolutely in love now. "Oh yeah!" she said as she watched herself rub her hands over her giant tits. She almost orgasmed right there just feeling up her sensitive nipples. The beauty in the mirror gazed back at her. "Oh fuck, you are so damn hot, you titty monster. You sexy freak." She pulled a nipple up to her mouth and sucked it, moaning in ecstasy. Meanwhile, one of her hands slipped down below her skirt to finger her wet pussy. She stumbled backwards into the living room and fell over, back first, onto the couch. As she panted and moaned and masturbated, she failed to notice that...