Its nice to see some good ol' fashioned BE on this place again. You have my kudos for that.
But outside of that, this was a bit of a mess. I'l try to tackle each topic individual.
-BE Description: While in some places you were spot on, other places were lacking. When it went into overdrive near the end, although you did an ok job at describing size intervals, you failed to describe the repercussions of such sizes. When I read a story where the breasts grow THIS large, I kind of expect the writer to take their time on the damage or effects that their chest is creating. That's not to say that that was compeltely absent from the story - its just bare minimum and left very much to be desired.
Characters: Bland and forgettable. The stereotypical scientist and stereotypical test subject. That's not to say they were AWFUL - the dialogue was very well written and believable, and they didn't necessarily become unlikable at any point.
I'l take this chance to critique the plot. For those who haven't read it yet, know that I am about to divulge into spoilers.
The plot was...promising, but ultimately left flat. A woman is part of a mysterious experiment that makes her start to grow, much to her and the scientist's surprise. While nothing new, I like and don't like how you handled it. Cutting to the chase and getting right into the BE action is definitely a kick in the head and grabs the reader immediately...but I was hoping for some kind of flash back. An explanation for the experiment, some background on the causes of the expansion. Instead it remains a mystery, which to some it may be fine and they may not care, but to me, it almost comes off as lazy. But that may be a bit harsh, so don't take that to heart to much.
Also, I'm never a fan of when the woman dies as the result of her expansion. It always leaves a bad taste in my mouth. Granted, its realistic, but its a bit...too on the nose for my personal tastes.
-Technical Quality: Here is where you shined. You have a very interesting writing style that cuts away from boring, generic or cliche descriptions, and I like this. Because of this, I encourage you to keep practicing and sharpen your skills, because you have definite promise in writing these stories.
While this may not have been my favorite story ever, its still solid and interesting to read. Good work on this :)
