Kristen lifted the Pig vial up to her face, looking at the liquid intently.
"I've always wanted to have more curves", she said as she opened the vial. She gulped down half of it, and after a minute she started feeling dizzy.
"How... how long until I can see any change?" Kristen asked. She almost tripped over the bathroom's carpet, but Mary grabber her by the arm and helped her find her balance again.
Mary shook her head. "I have no idea, I.. last time I fell asleep immediately".
Someone banged at the door.
"Who's in there? I need to use the bathroom!" a masculine, drunken voice said in annoyance.
Mary walked to the door, turned the lock and opened; Kristen followed her steps, struggling to walk straight.
"We're sorry" Mary said with a blush, "my friend here was not feeling very well and she needed a break from all the crown and noise". A convincing lie as Kristen looked visibly unwell on this instant.
The man shrugged and walked in, pushing the two women aside, and he started unzipping his pants to pee as though he didn't care about giving them a show. Kristen and Mary wrinkled their noise in disgust and walked away from this mess of a human being.
While they were still in the corridor leading back to the living room, Kristen felt a strange tingle run through her body. She paused and leaned against the wall, feeling uneasy and about to lose her balance again.
"I think it's starting..." she whispered, clutching at her chest.
Mary hugged her friend, and felt a shiver run through Kristen. She heard the sound of a seam cracking a little and stepped back. Kristen looked down on her body, and to her amazement her butt and thighs had grown curvier to the point that she had popped a button. Her belly was starting to show some pudge as well, but more importantly her breasts were slowly beginning to gain a cup in side, revealing her cleavage outrageously - and making Mary blush.
"It's working!" Kristen said with a short breath.
The changes didn't stop there though. Mary could see that Kristen's nose looked longer and flatter, and her ears were pointier by the minute. Small nubs were also appearing on Kristen's tummy, who lifted her top to reveal growing teats.
"Oh oops..." Kristen said uncomfortably. Mary felt herself strangely aroused by the sight, but was doing her best to keep her head cool.
"This could get ugly if we don't get our hands on the Human form vial, Kristen. But I don't have it with me, I left it at my place..."
"I think you're right..." Kristen said absentmindedly as she was tugging on one of the teats. There was no denying that the situation was strangely arousing to them both.
Someone appeared at the corner of the corridor, and in an instant the two women had pulled down Kristen's shirt to cover the sight.
"Let's go before it's too late", Mary said under her breath. She took Kristen's hand and they both left the house in a hurry, to the confusion of a few party-goers.