You take the necklace from Brooke and carefully put it around your neck. Even though you have witnessed several transformations including Brooke's, you still find it hard to believe.
“All right, I will try to be you.”
“You can become any woman you want, not only me ”
You think quickly. Even if you fantasize about many beautiful women, your boyfriend instinct warns you that it would be a bad idea to choose anyone but her.
“You chose me . I love you and I will also choose to become you.”
Brooke's beaming face confirms that it was the right thing to do.
Still nervous, you take a deep breath and try to focus on your memories of Brooke. It is quite hard with your twin staring at you and you close your eyes. You feel a tingle and a wave of heat running through your whole body from head to toe. The heat concentrates on your crotch and you feel intense pleasure as your penis hardens.
You keep your eyes closed and feel your body changing. Your buttocks swell and you feel cramped in your pants. A moment later, your shirt and pants suddenly disappear, replaced by the blue dress Brooke was wearing a few minutes ago.
Your nipples harden and you feel breasts growing under the fabric of your dress. Your hair falls in front of your eyes and your beard disappears. You open your eyes, and see you have now Brookes long blond hair. He is watching you transform and you can see his erect member under his pants.
The heels of your feet rise as your shoes turn into Brooke's heeled sandals.
Surprisingly after all those changes, you still feel your penis big and swollen but unable to ejaculate. When you put your hand under your dress, and find you have no panties, probably because you didn't think about it when you focused on Brooke's mental image.
You feel a smooth crotch, and, a bit lower, the moist lips of your vulva. Even though it's gone, you still feel the presence of your penis like a phantom limb. You massage your clitoris and the sensations of your penis begin to fade, overwhelmed by your new female pleasure.
Your change is over and you completely took on Brooke's appearance, just taller as you are still 6 feet tall. Brooke has stood silent all along in amazement at your transformation. You keep masturbating and as your nipples harden, you notice that you aren't wearing a bra.
Brooke undresses quickly. It seems not enough for him to watch you masturbate.
He helps you take off your dress and begin to caress your body.
You still wear the necklace and you have a sudden fear that a parasitic thought triggers a new transformation. It would be safer to remove the necklace, but transforming during sex may be amazing.