Standing just behind her I slowly stripped from my little black dress, dropping it to the floor to be joined by my bra and panties. Stepping up to Pau...a I slid my arms round her waist, guiding her back to me.With her weight slightly against me I watched over her shoulder. I heard a soft moan from Paula, Sissy and Missy were slowly circling their fingers round and round one another's nipples. I slipped my hands up, to the collar of Paula's dress and unfastened the clip, her hands reached round. “Now hold still, I am going to apply theses on to your body.”“Ok.” Sheva said as she remained perfectly still.Dr. Li started applying the stickers first to Sheva’s nipples which stuck automatically and fitted well with her breasts, and then crouched down to apply it on to Sheva’s v-shaped black bush.“There.” Dr. Li said as she stood up. “How do they feel?”“Odd.” Sheva said as she was a bit uncomfortable about the stickers. “But nothing that I can handle.”“Good.” Dr. Li said as she opened the. Slipping my hand in my boxers, I gently rub my balls. The text on the screen is so hot. My cock stiffens a bit more, popping out of my boxers. I grip it in my palm and slowly start stroking it.Something feels different tonight, like I’m being watched. I look up from the monitor, and see you in the mirror, watching me from the hallway. My little sister come to see what her big brother does on the computer late at night. Standing there in just a long T-shirt and panties. I jump a little, but. From three feet away I saw the hard points in the thin material of her dress top and instantly knew it had to be her nipples. I was immediately becoming aroused.H-h-hello Mrs. Anderson. Yes it's my birthday and I'm now thirteen. I really haven't grown since you saw me last week." I'll be the judge of that, but from where I stand you really have grown. Do you know why your Dad brought you here?" Uh, no." Son, we've had the talk and you've seen the movie. Now it's time you get some experience..