The drive across town went by quickly. Elsie was getting worked over the backseat by the metal bearings bouncing inside of the two plugs penetrating her bottom. And Jamie, being the newly minted good twin-sister that she was, made sure to tease Elsie by stroking her thigh, sending shivers up her spine. Elsie tried to return the favor, but the sensation was too much, and her arms hung limply at her side. A line of drool was dripping down her jaw, pooling onto her new dress. Sarah took one look in the review mirror and waved her hand, and a pacifier appeared in both girls' mouths. Elsie began to absentmindedly suck at the invader in her mouth, while Jamie took a little longer to get used to it. Jamie caught Sarah's gaze in the rearview mirror, and was about to ask her why a pacifier, but the look she received preemptively told her all she needed to know. The pacifier was there because Sarah wanted it there, and there was nothing else to it. Wanting to do her best to impress her new mistress, Jamie did not dare to attempt to remove it. She had no doubt in her mind that it was stuck there, the same as the rest of her outfit.
Jamie's new body came with a few interesting side effects. Never in her adult life had she thought that she would be able to comfortably fit in the backseat of her car. Not that it was small by any standard, but the backseat was never as comfortable as one of the front seats. But, at her new size, it was downright roomy. And, to top it all off, she was barely able to see out the window now. Everything looked so much bigger outside. The new perspective made it a little hard to tell where they were, but she was able to piece it together as they went. After a moment, she realized that back at the house, Sarah was still talking about attending Mark's party. Although, once Sarah arrived, Jamie doubted it would remain as Mark's party for long.
Mark's parents were rather well off, and lived outside of the recognized boundary of the town, in a nice sizable mansion isolated in the middle of the forest. No one would be showing up unannounced, and they could be as loud as they wanted to be. It was the ideal place for an end of the year party, one that was about to get way out of control.
Sarah pulled off the road and up the paved driveway leading into the forest. A minute later and they had arrived, pulling into the absurdly ornate parking arrangement. There was only one other car parked outside. Jamie realized was Mark's car, having seen it in the parking lot at school.
"You two can wait right there, and I'll get you out," Sarah said. Jamie reflexively tried the door handle, but found that it didn't budge. Sarah must have engaged the child locks at one point, Jamie reasoned. Sarah made her way around the car, and let Jamie out first. When she opened Elsie's door, Elsie was slow to begin moving, caught up in her daze of pleasure that had not yet subsided.
"Elsie please follow along," Sarah said as she waved her hand once more before taking Elsie's hand and pulling her out of the car. Now under Sarah's magical influence, Elsie was moving much faster, following the directions of her Mistress. But when Jamie looked at her face, it was clear that she wasn't present in the moment. "Let's hurry up and get inside, we have a few things to do before everyone else arrives."
Sarah pulled her dazed charge towards the front door while Jamie kept pace behind them. Jamie's eyes were transfixed on Elsie's padded bottom, and she suddenly realized that the padding made Elsie's bottom much bigger, and attractive. Sarah didn't bother to ring the doorbell, but pushed the door open and walked inside. When Jamie walked inside, she was taken aback to see Mark sitting on the second step of the grand staircase, which was the centerpiece to the very large entranceway hall. What was more surprising was how Mark was dressed. He was wearing a white bathroom robe, which covered most of his body, but it was slightly parted, giving Jamie a view of the harness, he had on underneath, which accented his build slightly muscular build. And he was wearing a pair of shiny black briefs, which did nothing to hide what mark was packing, but something was not quite right down there. It seemed to be misshapen to Jamie. Too bulky, and cut at the wrong angle.
"Welcome to my home," Mark said, as he stood up from his seat. "As you can see, I've kept my end of the bargain. I hope you are pleased?"
"Yes, this will do nicely. Thank you, Mark," Sarah said. "And now for your reward. Jamie, if you could, please remove Mark's robe for me."
"Yes, Mistress," Jamie said as she did as she was instructed, and stepped back to admire Mark's body. The harness did a lot to enhance the look of his torso. It was muscular, but not cut. And the black briefs matched nicely. Clearly there was something else going on in there.
"Thank you, Jamie. You're a little shorter than I remember. And I never would have thought that I would see you dressed as you are, but I figured Sarah wouldn't take too long to go after you with the history you two share," Mark said.
Jamie's cheeks flashed red as she realized that Mark could see her as she was, in her tight pink dress, which did nothing to hide her bulky diaper underneath. Another moment passed and she realized the pacifier was still lodged in her mouth. She shied away, moving back towards the only safe place in the room. Behind Sarah, who was now laughing at the situation. Elsie, was still standing there expressionless, unaware of the situation at hand.
"Now that we have that out of the way, I will uphold my end of the bargain," Sarah said. Sarah let go of Elsie's hand, leaving her standing there idly, and walked over to Mark, and pulled down his tight underwear, revealing his junk in all its glory. Only, it was encased in tight metal chastity cage which kept Mark from accessing his cock. Sarah produced an ornate key and inserted it into the lock on the device. A small turn later, and the lock clicked open, and Sarah pulled the device apart, unleashing Mark's imprisoned cock. Sarah took Mark's cock which had just sprang back to life and began to stroke it to full attention. Satisfied with her work, she stepped back and took Elsie's hand once more.
"There we go, part one of our deal complete. How does it feel to be free of your chastity device?" Sarah asked.
"It feels good. I can't believe I was only locked up for a week. It felt like it was much longer than that," Mark said.
"Well you missed out on playing with it, umm, approximately 23 times if I recall correctly, so I can imagine. I hope you've learned your lesson this time around, because the next time, it will be much, much longer," Sarah said.
"Yes Miss Sarah, I won't try to deny your will again. Now about that other part?" Mark's voice trailed off.
"Don't think I've forgotten about that part. Jamie," Sarah said as she walked over and pulled out Jamie's pacifier, letting it hang down between her breasts by a ribbon tied to her collar. "Jamie, if you could tell me how long you think Mark's cock is, that would be much appreciated."
Jamie stepped forward, to get a clear look at Mark's freed manhood. From her vantage point, it looked to be only five inches and a little on the thin side. Not the most impressive member by any measure.
"It looks to be five inches, Miss," Jamie said.
"Mark?" Sarah asked.
"It's five inches, Miss Sarah," Mark replied, the wind taken out of his sails slightly.
"Jamie, what's the biggest dick you've ridden or sucked off?" Sarah asked.
"I think it was Benson's. His was eight inches," Jamie said, looking away.
"Thank you for your honesty. Now Elsie, go and kneel in front of Mark," Sarah commanded. Elsie did as instructed and took her place in front of Mark, as she continued to rhythmically suck away at her pacifier. "Elsie, go ahead and give Mark the best blowjob you have ever given. As you do so, his dick will grow until it is nine inches long. That is, however, if he can hold his load until the magic finishes. If he can't, the spell will stop where it is and our contract will be over. Is that clear Mark?"
"Yes Miss Sarah. I have no complaints," Mark said.
"You may go ahead and start Elsie," Sarah said. The pacifier in Elsie's mouth fell out, now dangling between her breasts by a pink ribbon tied to her neck. Without missing a beat, Elsie popped Mark's cock into her mouth and began to go to town on it. From Jamie's perspective, it looked like one of the hottest, messiest blowjobs she had ever seen, and she had watched a lot of porn before. Sarah caught her staring at the scene, unable to look away.
