A clever plan...

"I dare you to give me your phone," Christa said to Sarah while holding out her hand waiting for Sarah's phone, "and unlock it for me."

"Is that all?" Sarah said with a laugh, "I better get it back before the day is done." Unlocking her phone, she handed it back to Christa.

"You will," Christa said with a smirk. Christa wasted no time silencing Sarah's phone and her own. The pictures she took of them from yesterday were already on her phone, so all she had to do was a few quick edits. She found the number to Sarah's phone and sent the pictures over. "Phase one complete," she said to herself, "now whose birthday is it..." she rummaged through Sarah's texts while Katie and Sarah chatted in the front, apparently they were having trouble thinking of good dares now that they had to keep moving. "Ah, here we are," Christa thought when she found a message chain about the party. "Ashley's party, eh?" she thought, "and it doesn't sound like its a surprise party," and searched the texts for ones to an Ashley which was easy enough. Christa typed out the message, using habits she had seen in Sarah's text history to make it convincing.

The first message was asking if she could bring a new friend of hers, and Sarah's sister replied quickly, "the more the merrier <3". So then Christa took a deep breath and pushed her plan to completion. Christa, still pretending to be Sarah, told Ashley she and Katie had been experimenting with nudism and had taken a liking to it, so they won't be wearing clothes to her party. Naturally, Ashley didn't believe Christa's lie, so now it was "proof" time. Christa sent the modified photos to Ashley, showing Sarah and Katie standing naked in the park, and seemingly, just the two of them. This was enough to leave Ashley with no doubt that "Sarah" was serious about showing up naked with her equally naked friend. Ashley asked if her new friend was also a nudist, Christa said no, but she is trying to convince her. Christa didn't want to paint herself into too much of a corner, being expected to be naked or clothed, given their situation. Christa finished the conversation by saying she didn't want anyone to make a big deal of it, and that they were going into some bad traffic, so she won't be able to answer texts. "yeah, good thinking. I look forward to seeing you, even if I have to see ALL of you :P TTY when you get here". After waiting a few more minutes to make she Ashley wasn't sending another text, Christa deleted the messages from Sarah's phone as well as the pictures and turned the sounds back on.

"Here you go," Christa said cheerfully as she handed the phone back.

"Ok," Sarah said, "I'll bite, why did you want my phone?"

"I got your phone number and was checking out your search history and saved pictures, and I have to say WOW!" Christa lied making things up on the spot.

"What?!" Sarah said turning red, "You didn't!"

Christa could have kicked herself, sounds like it would have been worth it to actually do that. "I won't tell anyone," Christa teased.