Sue Storm is Becoming More Aggressive

Over the following days, H.E.R.B.I.E. continued to note the course of Sue Storm's mutation. Even abstaining from the bonbons or further contact with the mutant genetic material, the changes continued in her body. The small robot hovered silently near her all day as he scanned her developing form.

The Invisible Woman's breasts continued to expand, slowly but definitely. Externally, day by day, the changes were small. A few cubic-centimeters of fact, muscle, and nerve growth every day. Yet by the end of the week, Sue Storm had outgrown all except her largest maternity bras, and the breasts no longer sagged. The increased strength of her muscles held the larger, firmer breasts higher and more prominent than before. It was not uncommon for Sue to go without a bra during the day.

Muscular development continued as well, as evident not just in the increasing definition and density of her muscle mass, but the increased intensity of Sue Storm's workouts. By the end of the week, it was not uncommon for the Invisible Woman to have two weight-lifting sessions a day. H.E.R.B.I.E. did his best to facilitate even muscular development by increasing Sue's protein intake, and guiding her toward exercises for development of all muscle groups, not just arms and upper torso.

The small robot observed as the formerly smooth, unremarkable buttocks began to gain heft and definition. Body mass index stayed largely constant; the Invisible Woman did not suddenly develop washboard abs...yet as her caloric increased, fat was being deposited preferentially in her buttocks and breasts.

More interesting than these physical developments, however, were the mental and emotional changes. While overall stress indicators for Sue Storm decreased during her workouts, sudden outbursts of temper became more common. Small setbacks or annoyances which would have previously been met with indifference or measured calm now triggered almost violent outbursts of verbal ****. The blonde seemed on edge as she slowly outgrew many of her clothes as her breasts and buttocks grew, thighs and biceps gaining more muscle mass. Her panties seemed almost instantly swallowed between her butt cheeks, and when her final maternity bra snapped Sue took to wearing some of the Thing's Fantastic Four t-shirts.

"Any progress on countering the fucking mutagen?" Sue asked after ten days, as she did every day. The profanity had begun to creep into her speech much more often, especially when she was upset...and she was often upset.

"Negative. While integration with your DNA has slowed, active retroviral infection continues. Your breasts have increased nearly 98.6% since the beginning of infection."

"My tits are the size of fucking cannonballs, H.E.R.B.I.E.!" Sue shouted, face flushed crimson. She paced back and forth, hands grasped. Her forearms bulged with hard muscle. The blue t-shirt was tented out before her, the hard, swollen nipples prominent. "I don't think any of my uniforms will even fit me!"

"I have been programmed to anticipate this need," H.E.R.B.I.E. said. "The unstable molecule loom has been working on a new costume custom-designed for your new proportions."

Sue Storm stopped.

"Really?" she said. "Show me!"

H.E.R.B.I.E. was a very well-programmed robot. Yet in seeking out models for Sue Storm's new costume, the only women with comparable anatomical features were the more well-endowed pornstars and superheroines. As a consequence, Sue Storm's new costume was not destined to calm her mind.