Courtney Whitmore, AKA Stargirl, checked her teeth in the mirror. She was the youngest member of the team and had only recently relieved her braces. At eighteen years old, she was beautiful in a wholesome fashion that matched her earnest personality. While she had long legs, a cute bubble butt and perky C-cups, all the superheroes she worked with saw her as being too young and like their little sister . . . all of which frustrated the shit out of the pretty blonde teenager.

She pouted prettily at the mirror. 

"Who am I kidding? It's not like Tony Stark will ever care about my braces being off. I'll always be off limits to him and all the other cute guys here. Everyone's gonna ignore me until I die from sexual frustration!"

"Maybe, maybe not." came a sensual purr from her own reflection as it winked at her.

Courtney stepped back with a gasp as her reflection shimmered and the mirror's surface rippled like a pool of water.

The blonde that stepped out of the mirror held only a vague resemblance to Stargirl, looking more like some sort of sexy older half-sister than Courtney herself. This blonde was a full-grown woman with a body that was ridiculously lush and curvy, all barely covered up by an almost pornographic version of Courtney's red, white and blue costume. Her mask was a tiny domino's mask, hiding exotic features Instead of Courtney's midwestern prettiness. Where she wore a mid-riff blue top with sleeves, this version wore a blue corset with white stars on each generous cup. Where Courtney's blue shorts once stood, there was now a daring blue slingshot thong, showing off an amazingly generous ass and long, muscular legs with sky-high heels instead of boots on her feet.

"What- who are you?" Courtney asked, even as part of her knew the answer.

"I'm the you, you dream about being, darling." her reflection replied in a cool, sultry voice, shaking out her long, honey blonde hair tinged with streaks of blue. "The one you secretly wish you could be - a wanton temptress like those mutant sluts Emma Frost and Psylocke, a woman every man instantly dreams of fucking the moment they see her with the ability to know just exactly how badly they want her."

Looking her sexualized doppleganger up and down, Courtney blushed. It was exactly like she'd said. She trashed Emma Frost and other exhibitionist superheroines with her friends but she'd secretly always wondered what it would be like to be them - to have a body every man wanted and a mind that could just make even Superman hard with a thought.

"But- but how? And why?"

The other version of herself rolled her eyes and chuckled, making her decidedly more generous tits jiggle.

"Must you always be so boring and responsible? I'm here because you want to be me and guess what, darling? I can make that happen for you."

Courtney gulped and looked around. Maybe she should call for help, she thought, but- but what if she was telling the truth?

"Is- is this some sort of trick?"

Her doppleganger raised a hand and touched her face, taller than her by almost a foot thanks to her longer legs and high heels. Her hand felt hot and Courtney shivered at her touch, feeling almost feverish.

"I'm no trick, you poor little thing. I'm YOU. I'm the you that you dream about being, the you that can have any man she wants between her legs with little more than a smug glance and a swing of her hips. And all you have to do to become me is let me have . . ."

The exotic beauty leaned over, her breath hot against Courtney's face, her much bigger tits rubbing up against Courtney's chest as she did so.

"One . . ."

The hand in Courtney's hair was matched by another one caressing the side of her face.

"Little . . ."

And the last word her reflection spoke was so close that she only had to whisper it into Courtney's ear.

"Kiss."

Her insanely sexual doppleganger leaned in, her mouth just inches from Stargirl's own