Gretchen stood at her dresser, staring at her underwear drawer. She couldn't believe that it had taken her this long to figure it out, but as she looked at her drawer she discovered she was very low on bras. For seven days in a row Petra had made her take off her underwear, and then kept it. While Gretchen still had underwear left, she was getting low on bras, at least on ones she liked to wear to work. She ended up selecting lacy demi-cup that was really only for hot dates, but it would be okay underneath the white blouse and grey skirt she planned on wearing. She picked out the panties that matched it and set them by her pile of clothes. She finished getting ready for work while still naked, getting dressed at the last minute.
The day seemed to drag on forever. Work, exercise, errands, it was all just killing time waiting for going to the movies with Petra, and see what she would make Gretchen do next. When she got home, she stripped naked, made herself some dinner and spent some time surfing. She was amazed by the comments guys had made about her postings. Most were extremely complementary, many asked for more, and more explicit poses. She laughed; it didn't seem to matter what you showed a guy, they would always come up with something more they want to see.
Finally, it was time to go meet Petra. She put back on the outfit she had worn to work and drove to the multiplex. Petra was already there, and had bought tickets to some period drama that had been out for a few weeks. It wouldn't have been Gretchen's first pick, but she hadn't seen it yet, so it was probably okay. They entered the theater, handed in their tickets and found their way to where the movie would be. They climbed the steps up to the very back row, where Petra picked out some seats. There were only about 5 other people in the theater.
"So, I have this little problem," Gretchen confided as they sat down, "I'm running out of underwear. You keep stealing it."
"Really? Out of underwear? Me, stealing?" Petra was grinning. "Well, maybe you should stop wearing it."
"Oh ha ha," Gretchen said sarcastically, "like I'm going to start going to work without underwear. Really, I need it back."
"Tell you what, you get to ten days, and we'll talk about how you get your underwear back." Petra didn't leave any room for arguing, so Gretchen let it slide. That was only two days, and she figured she could make it. They continued their girl talk until the movie started up. The previews had just finished and the opening credits were rolling when Petra leaned over to Gretchen.
"Unbutton your blouse," Petra whispered in her ear. Gretchen's heart started to race. She thought something like this might be coming. There were now a dozen other people in the theater. No one was near them and they were all facing away from her, but all they would have to do is turn around to see her. She found the idea frightening and fascinating at the same time. Slowly she reached up and undid the first couple buttons on her blouse, letting her lacy bra peek out.
"Unbutton it all the way," Petra urged. Slowly, because her hands weren't working so well, Gretchen undid all the buttons and untucked the blouse, fully exposing her lace covered breasts. Gretchen looked down and in the light from the screen her nipples were clearly visible as bumps in the flimsy fabric. "Nice bra," Petra whispered, "very sexy" They both giggled.