Change in vacation

Jon and Mikey went to the restaurant to meet up with their parents. They sat at a table and ordered an appetizer. After a few minutes, their parents ambled up, hand in hand.
"Boys, this place is amazing. Your mom and I had a great time in the museums and seeing the ruins. Mikey, thanks for suggesting we come to Delphi"
"You're welcome dad," replied Mikey.
The family had a great meal, but had to skip dessert because the tourguide pulled up in his van. They pilled in and got more information about the country on their way back to the airBNB. They got out and the tourguide waved and honked as he pulled away into the busy Athens street. The tired family went inside and the adults went to their room to clean up. The boys went to their room, which was a decent sized bedroom with two twin beds and 2 small dressers. The boys had practically exploded on the room, with socks and underwear on the floor. Their bathing suits were drying over the shower door and the countertop in the bathroom.
"Mikey, you ready?"
"I was thinking about it Jon, and maybe we can do it in the morning," countered Mikey, not excited to be Michele.
"That's the best time, so we can get used to the change before we do anything. You may have some experience going back and forth, but I sure don't."
Mikey thought about that for a bit, and how much Jon helped today, and decided it was fine.
"Just make sure you take it off before 24 hours," said Mikey as he took off the necklace.
As the necklace passed the top of Mikey's head, his hair grew and fell down to his shoulderblades. Some light makeup appeared on his eyelids. His teen titans t-shirt went from having Robin on front and Cyborg on the back to Starfire on the front an Raven on the back. The sleeves shortened a bit, and his breast pushed out just under Starfire's head. He felt the brastraps on this shoulders. His cargo shorts became vintage high rise, and a small purse appeared on the end table by his bed. Some of the boxers in the room became panties, and a small bra appeared too. The socks went from white crew, to pastel ankle socks.
"Whoa... That was trippy. Mikey, what's your name when you like this?"
"I'm called Michele," said Michele while pulling on the bra straps a little. After getting a little more comfortable, Michele passed the necklace to Jon.
"Well, here goes nothing," announced Jon as he put the necklace on.
As the necklace went over the crown of Jon's head, a blue streak appeared in his black hair, which went down to his shoulders when it was done growing. Earstuds appeared in his ears and some lipstick appeared on his lips, with some faint liner on his eyes. Jon's breasts seemed to keep growing and growing, stopping at the point where when he looked down he couldn't see his toes. His white t-shirt elongated to become a sun dress, filling in colors of orange, yellow and green. The flip flops he was wearing earlier became a smaller size, and changed from black to yellow straps. A small purse appeared on his nightstand as well. The rest of the boxers in the room became a mixture of panties and thongs, with a few larger bras. One seemed to have a lot of lace.
"This is weird Mikey. I knew it would be weird, but this is beyond what I thought," said Jon and he was moving his hands around his body feeling his curves, " I need to check this out."
Jon started walking to the bathroom, and took off his sundress on the way throwing it on the floor. Mikey watched his now sister, naked except a black thong and a necklace, walk toward the bathroom full length mirror. Mikey saw his brother's breasts sway back and forth from the back and his, now her, hips sway back and forth. It was hypnotic.
"Not too bad if I do say so myself," said Jon flexing in the mirror in the bathroom. He then pushed up his breasts and let them go. "Hey, our bathing suits changed. Up for going to the beach tonight?"
"Can we go tomorrow?"
"Fine, spoilsport."
Mikey went around the room getting his stuff and putting it in his bag. He saw now it now contained a makeup kit. It was the same amount of clothing otherwise, just a little smaller and he thought a little more revealing. Mikey got out what was his sleeping shirt. He took off his shorts and t-shirt, and took stock on how he looked. He'd seen it before, but with his sister parading around the room without anything on but a necklace, he took stock again. His breasts were no-where nearly as big as his sisters, but were definitely noticeable. He could cup them easily now, unlike a year ago. He put on his nightshirt and went out to the living room and saw his parents.
"Some trip, eh Michele?" asked Rachel
"Sure is mom. What's up for the rest of the trip?," asked Michele to see if anything changed.
"We only have a few days left, so we were thinking about checking out Mykonos. There is a ferry ride that should be gorgeous. We can leave some stuff here, because we would spend the last night here before flying home the next day. You could probably carry it all in a day bag, since it would be only 2 nights."
Michele was unsure if that would have happened if the necklace was on. As he thought about it, Jon came out in a nightshirt, only he didn't have a bra on.
"Joan, I think you forgot something." observed Rachel, pointing to her breasts.
"Right, thanks mom,"replied Joan has she did an about face to go back to her room.
".Michele, there is nothing wrong with a woman being proud of her body, but one has to be careful from time to time. Your dad could have walked in, and that could be embarrassing for him"
"Yea, wouldn't want to embarrass dad," said Zoe
"Yes mom. I get it," said Michele.
"Good"
"Do you think we will have time to go to the beach before we leave tomorrow?"
"Probably not sweetie."
In her head Michele was doing cartwheels. She saw that all she had was a two piece that let the world see her belly button.
"But we can go when we get to the island."
The cartwheels stopped.