Positively

"Sure, I guess. Would you be able to shrink me back down again, but increase my breast size? I liked being tiny, aside from the lack of a bust." There's a certain amount of vanity in your question, but Denaria smiles in understanding.

"I think so. Let me see what I can whip up," is her response, back turned to your tied form. You can't help but stare at your cock, and as you do it starts to heat up, your attention enough to coax it to an erection. Standing a modest five inches at full length, it actually almost looks rather cute, and you figure it might not be so bad to have, as long as you can somehow cover it up comfortably.

The doctor turns around and can't help but giggle at your show of arousal, clearly pleased that you're already enjoying examining the new organ. She's holding another pair of vials, and loads one into a syringe before closing the distance to your body. "Drink up dear," she sings as she holds the first vial to your mouth, and you quickly swallow the liquid without protest.

Once again, the change is instant, with the feeling as if you're compressing in on yourself, the straps instantly loosening around your arms and legs. Your legs actually leave the straps entirely, as they start to move upwards, your body shortening as well. Everything about you seems to almost be deflating, your breasts quickly shrinking, hips and thighs pushing inwards, and even your cock seems to shrink about an inch. After several seconds, you're left sitting completely out of the restraints, and you sit up entirely to look again at this small version of your body. You've shrunk to a height of about five feet, your breasts are tiny A-cups, and your butt is no bigger than a cantaloupe. You feel like you haven't been this small since you were 18 years old.

Before the change quite stabilizes, though, the warmth still running through your body, the doctor presses the needle of the syringe into your arm, and the warmth quickly races to the front of your body, centering on your tiny breasts. They start to expand outwards, rather slowly compared to earlier changes, and after a few seconds they stop growing, only slightly larger than they were before the shrinking serum, around a small D-cup. Your nipples perk outwards, about half an inch in length.

When the changes finish, you're left in a much smaller body, though still sporting a sizeable bust and a cute little cock between your legs. Dr. D is clearly pleased with your choices, and hands you the lab coat from where it was discarded near the door.