Amanda hadn't considered that the gun in her hand was developed by a man seeking to enhance the female form and very much against the idea of marring female beauty. And so, safeguards had been put in place in the guns programming to prevent it's effects from doing anything but enhancing a woman's looks while adding muscle. The gun did it's utmost to ensure that the woman's femininity shone through to even the most muscle hating of men. And so, as the gun went to work on Amy's muscles, it was also enhancing the beauty of her face and the perfection of her bust.

This being the first blast Amy had received from the gun, it's muscle enhancing effects were put to work turning her slightly out of shape form into a perfect level of fitness. Her body fat dropped to the ideal level for a woman of her build, perfect to show off the tight muscles that had formed up and down her legs, arms and abdomen - in fact, in Amanda's eyes, they hardly even looked like muscle, just new sexy curves being added to her sister's body, for Amanda herself did not think muscle could look attractive on a woman and so these new lines adding shape to Amy could not be muscle.

But Amy could feel the new muscles - she felt energy coursing through her body like she couldn't believe. No trace of fatigue touched at her mind or body at all any more. And when she looked down her jaw dropped. The T-Shirt she was wearing was now pulled up way clear of her shorts by a pair of tits that were bigger, and yet firmer, than even her own great rack.