...Derek! Come on back!" Everyone cheered as the awkward boy returned to the stage, with his new malamute Felicia still on her leash. "Lucille said your costume could be improved since it wasn't really a costume." Josie held out the deflated husk that was Lucille. "So how about you put her on?"
Derek looked bewildered, but the crowd cheered in anticipation. Josie took advantage of his confusion to take Felicia's leash and hand him the suit. Staring at the face, which looked odd with the eyes and mouth opening to empty blackness within, Derek asked, "How do I put this on?"
"It stretches. Pull the mouth open wide, and slide in one leg at a time. Probably should take your shoes off so you don't deform her feet."
Derek did as instructed. He slipped off his shoes, and then stretching Lucille's mouth wide Derek put one foot in at a time. Sitting on the stool that Lucille had previously occupied, Derek slid the skin up his body. With the mouth stretched around the top of his thighs, he arranged the legs to properly fit before standing again. This time, Derek was noticeably shorter.
As Derek slid the suit up his waist, Lucille's loose, shirt skirt naturally fell into place. Derek continued to pull up over his stomach, and the empty corset she had worn tightened into place on his stomach. Derek continued to shrink in height as his torso warped to match the length of Lucille. Next, Derek slid his arms in.
Josie approached to help with the last part. "Now, say bye to Derek," Josie pulled the mask over his face and positioned it. "...and hello to Lucy! Not quite Lucille but it's still her body." The body was undeniably Lucille in every curve and feature, except she had Derek's blue eyes instead of Lucille's green. "Which reminds me, she asked me to do one thing. Can you turn around?" Lucy uncertainly followed the order.
With the hand holding the leash she flipped the skirt up, showing off her leather thong, and smacked her left butt cheek. Lucy yelped and jumped in surprise, causing the skirt to fall back in place. Lucy glared at Josie.
Josie shrugged. "She said she wanted everyone to know that even with a guy inside she was a fine piece of ass." Josie then handed back the leash. "Anyways, now you have a proper costume, which is good since neither you or Lucille dressed that differently than normal."
Lucy grimaced and awkwardly swayed back to her seat, leading Felicia whose tail was wagging excitedly.
"Now, for my next trick!"