If Lydia was going to make your lesbian fantasy a reality, it was probably best to pick the monster known for being sexy. Once your selection was chosen, the machine started to warm up.
Suddenly you felt the changes start. Your torso becomes shorter as you waste begins slimming. As your height continues to grow shorter, you feel yourself rise slightly as your butt inflates to a more desirable feminine derriere.
As your limbs begin to change to be more slender, you find yourself having trouble breathing. As you try to take a deep breath, your chest suddenly expands as large breasts grew. With each breath they increased a cup size. First A, then B, followed by C. You thought they would stop at D cup. Feeling safe to take another breath they jumped up to double Ds, giving you a look that would make any anime girl proud.
Your neck begins to tickle as your hair grows, soon it was cascading down your back in wavy blonde locks. The mirror in the machine showed the gorgeous girl that you were becoming.
Your reflection began to turn you on, the the sensation suddenly changed as your anatomy inverted yourself as you crossed to the other side of the gender line.
Once you were completely converted into a woman, other changes began. Small devilish horns grew out of your scalp, soon poking slightly above your hair.
Next you felt a pressure began pushing out from a distinct point in your back. It was near the base of your spine, slightly lower then your waistline but above your butt crack.
Your jeans shortened and re-fashioned themselves as an incredibly short miniskirt. Soon a spade tale emerged from beneath the skirts folds.
Your shirt became a tank top, with a low cut showing off a generous amount of cleavage. The tank top changed to a crop top with the Monster Girl Cafe logo on it.
Finally small bat like wings emerged. With the changes complete, the doors open and you exit the device. Lydia was waiting with a smug smile on her face. It would appear she was now taller than you.
"If we want to get the full experience, do you think I could get my girlfriend as a waitress?"
"Of course!" Tanya shouted enthusiastically.
"So what do you say? Be my waitress? Or do you want to go ahead and walk around. I'm sure walking around as a sexy succubus at the con will be a very different experience then what you usually get."
You are momentarily distracted as you feel a twitch behind you. It takes a second to realize that it's your tail, beginning to sway. What should you pick?