Ally knew about the beach party because Kelly had been planning on going their herself. She had talked about it with the family and would be heading there after her shower. However, fate took an unexpected turn for her. Instead of going to the party, she ended up shrinking down into a baby because of the special shampoo she had bought.
The ones going in her stead where Ally and Jenna, both aged up into hot 21 year olds by another bottle of shampoo. They didn't have to worry about invitations as the beach party was open for pretty much everyone. A few gatecrashers wouldn't be turned away, especially not ones that were drop-dead sexy like them. The fact that they were wearing such skimpy clothes that showed off their curvaceous bodies all but assured their entrance.
As they approached the party, they paused long enough to take off their high heel shoes, which were pretty impractical on the beach. "So, got any plans?" asked Jenna as she removed her shoes.
"Just one: find a hunk and get laid," said Ally.
"You don't mince words," observed Jenna.
"I've been hankering for a man ever since I got these," said Ally, hefting her larger breasts that were barely contained by her bra, "And I doubt any guy would turn me down with tits like these."
Jenna wasn't about to talk her friend out of it. Her newly-awakened libido was compelling her hard. Both women were craving sex and there were plenty of young men to choose from. "And what do we do after we get our guys?" asked Jenna.
"We'll figure it out later," said Ally dismissively, "But I'm thinking we divide and conquer. Unless you wouldn't mind bringing your boy over for a foursome."
Jenna raised her eyebrows at that. "Wow, you are promiscuous," she said, her adult mind providing her with an expanded vocabulary.
"Guess I have more in common with Kelly than I thought," said Ally with a shrug, "Now c'mon, the party's getting started." With that, the two of them headed over to the part of the beach where there were plenty of young men and women partying.