Disclaimer: I own nothing but Ally and her skinny jeans. ^_^

"Sirius how in Merlin's name do you fit in those pants?" James asked giving his tall friend a strange look. The boy in question was lounging in front of the Gryffindor fire place wearing a pair of the tightest jeans known to man and a black wife beater.

Sirius grinned and asked, "Why you jealous?" James looked appalled then noticed something about the pants.

"What the fuck Sirius, are those my sisters pants?!" Remus looked up from his book and glanced at the jeans Sirius was wearing and answered for him, "They are indeed Prongs. Hey Padfoot does she know your wearing them." Sirius was laughing at James' face and failed to hear the question, or the portrait covering the opening the common room.

"No she doesn't Moony, and she hopes for Padfoot's sake you three are joking." said a tall and extremely thin girl with waist long black hair and stunning purple eyes. Allison Rose Potter was not someone to mess around with, especially with her clothes/hair.

Sirius paled at her voice and turned around in his seat, "Um hey Al. How's it going? Is it cool that I borrowed a pair of your old jeans?" He hoped that since they were an older pair she wouldn't mind as much.

Ally narrowed her eyes and asked, "How old?" He gulped and mumbled something. James snickered and Remus rolled his eye. Ally however moved closer and said, "Didn't quite catch that Pads, how old are my jeans your wearing?"

"Two days." Sirius answered lowering his eyes. Ally's face turned a bright red and yelled, "MY BRAND NEW JEANS!? YOU ARE WEARING MY BRAND NEW FUCKING JEANS? JESUS CHRIST SIRI NOW I HAVE TO GO BUY NEW FUCKING JEANS. FOR THE LAST TIME STAY AWAY FROM MY GODDAMN CLOTHES!"

She then pointed her wand at him and a hot pink light hit him straight in the chest and his long hair grew even longer, his chest started to grow, his waist shrunk and his arms and legs got a little bit leaner. Sitting where Sirius black was once sitting was the girl version of Sirius. The whole common room laughed as they saw Sirius get changed into a girl. No one laughed harder then James and Remus, they were on the ground clenching their sides tears streaming down their face. Ally rolled her eyes and stormed up into her dorm room.

Ally slammed the dorm door shut and flopped down on her bed, A girl with beautiful auburn hair looked up from the bed next to Ally's and said, "what did the boys do now?"

Ally snorted and said, "Just Sirius this time, he stole my new jeans and had them on. I changed him into a girl." Lily chuckled and answered "when will he learn? Anyway how's he look as a girl?"

A slow grin slide across Ally's face as she closed her eyes and she said, "Even hotter."

Sirius turned to his best friends and said in a slightly higher voice, "Will you two shut up and fix me, now!" Hearing his voice James and Remus just started laughing all over again. Sirius sank down to the couch and covered his.. Or maybe her face and groaned. After five minutes the girls came down with their messenger's bag and walked over to the boys.

"Class time, get your shit and let's go." Ally said nudging her brother who was laying on the floor still chuckling every time he glanced at his best friend. Remus stood up and help pull James off the floor, Ally turned to Sirius who had the decency to look ashamed and smirked, "Coming?"

Fin.

Ok, this was a little something I thought up and decided to leave it as is. Now should I keep going with it or just leave it?