Change her into what she desires.

You decide to give her what she wants, after all if you could change yourself why shouldn’t she? Leading her into the girl’s bathroom you clear all the other students out with a simple mental command and turn to her.

“Do you trust me? I want to help you.” You ask in an earnest tone. She nods and looks a bit confused.

“Then take your cloths off and stand in front of the mirror.” You tell her seriously.

Tamara blushes at first but surprisingly doesn’t argue. Shyly taking off her white school blouse and pleated skirt she stands in front of the mirror and gazes despairingly at her own reflection.

Her body dominated by rolls of fat but her complexion is good. Her breasts are actually pretty big but that is always the advantage fat girls have over their skinny friends. Her thighs and hips are lumpy but her ass is nice and plump, rounding out the back of her simple white panties nicely.

You stand behind her and gently rest your hands on her shoulders, her face would be very pretty if it was slimmer and her hair is long and glossy but unfortunately it is also very frizzy.

“What would you change about yourself if you could?” you ask her sincerely.

“I wouldn’t be fat for a start. I’d have a trim waist and flat stomach and nice legs.” She answers sourly as she gazes at her reflection.

She gasps as her fat seems to melt away, her skin tightening all over her body. Her face growing leaner as her cheeks suck in and her double chin recedes. Her waist tightens and her belly disappears as her thighs shrink to slender toned muscle. Her breasts and ass remain unchanged though, giving her luscious inviting curves. With a squeak of excitement she runs her hands over her hot new body, exulting in the change.

“What… how…?” she babbles excitedly, and then stares at you excitedly in the mirrors reflection, “Tall! I want to be almost as tall as you!”

You laugh and she begins to grow, her legs and torso lengthening until her head is just below you eye-line, quite tall for a girl her age now with long silky legs.

“Breasts! And a belly ring!” she cries in excitement.

You frown a little as you look at her breasts, they are already a large C cup but then you shrug. They inflate out to a strippers DD cup, almost bursting out of her simple white bra and a gold belly ring with a large pink diamond appears in her belly button to adorn her flat smooth stomach.

“My hair! Oh I hate how unmanageable my hair is!” Tamara cries running her hands through the offending mass of brunette locks.

Suddenly her hair in running through her fingers like smooth dark silk, you even throw in some blonde streaks for effect, she is almost crying with joy now touching every part of her face, hair and body in exhilaration.

“Lips, eye lashes, freckles… oh I don’t know!” She giggles as happy tears run down her face.

With a thought from you her lips plump out, her lashes grow long and her freckles fade leaving her complexion smooth and flawless. Looking at her in the mirror you can still recognize Tamara by her face, now beautiful as you knew it would be, but the short plump girl has become a walking wet dream for any school boy alive. She turns and throws her arms around you, sobbing with pleasure and pressing her hot new body up against yours.

“Oh Thank You John!” She cries, “I don’t know how you did it but thankyouthankyouTHANKYOU!!”

You are becoming painfully aware of just how hot this new little sex-pot in your arms is as you stare down at her luscious ass and feel her large full breasts pressed up against your chest, also you are suddenly aware of your pants growing tight around your rapidly hardening cock.

Tamara doesn’t take long to notice your bulging pants either. Pulling back she looks down at your crotch and then back up at you.

“Is that because of me?!” She asks in a slightly bewildered tone.

“Ummmm, I’m sorry…” You mutter trying to turn and hide your boner from your baby sister’s best friend but she catches your arm.

“Wait…" she says turning you back around to face her…