A/N: I usually would of finished the chapter for my other story Secrecy, but I wanted to get this chapter up on Halloween. Please R & R.. and enjoy your evening!

Summary:Completely AU. One lawyer, one baker, one science professor, one real estate agent, one architect, and now one upcoming fashion designer. Drama is bound to catch up to them. (not all of the characters will be in it) Pairings decided, you'll find out what they are throughout.

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It was the day of the Halloween party. Derek and Mark had moved the couch in the living room over to the wall and putting the armchair beside it. Izzie decided to bring the beanbag chair up to her room since it didn't have a reason for it to been in the living room. Drinks (mostly liquor) and snacks had been placed in the kitchen on the table. Alex had set up the surround sound. Black and orange streamers at the corners of the room.

Mark, Alex and Derek were standing in the living room, fifteen minutes before people were suppose to show up, in there costumes. Mark wore a tux, black sunglasses, and something that resembled an earpiece, he was a security guard, he wasn't one to go completely all out, so he just put together what he had. Alex had on a pair of boxing shorts, a white man tank top, and red boxing gloves, I think you could guess he was a boxer. Derek wore a buttoned lab coat which he had already had.

Addison walked to where the guys were. She really was a devil, she had on bright red lipstick, devil horns over her tossed around hair, very short, red, tight leather shorts, long sleeved, leather, tight, zippered up leather shirt/jacket, it could go either way, she had zippered it up to the middle between her breasts, revealing some, but not all of her cleavage, and red, fiery stilettos.

Alex looked at Addison, and his mouth dropped. "Damn Addison!" He exhaled with a whistle. "That is hot! Pure sex appeal!" He said smirking like an idiot looking at her.

Even as her eyes focused on his biceps, she rolled her eyes. "Pure sex appeal? Jeez Alex, you've gone soft." She smirked.

Mark and Derek looked at Addison, raising their eyebrows at her costume. No one saw that coming.

"Addison." Derek spoke. "You look…" He tried to find the right word to say. "Nice?"

"Yeah…" Mark said as his eyes traveled to the stairs where he heard footsteps. Izzie hadn't of told him what she was wearing, he wanted to find out, but it wasn't her, it was Meredith.

Meredith smiled down at Derek. Her hairs was in soft curls, glitter scattered on her cheeks, to her neck, to around her cleavage, she was wearing a tinker bell costume, wings and all, and wearing matching light green high heels.

Derek looked at Meredith, his mouth ajar. He was speechless. She looked beautiful, no gorgeous. His mouth moved trying to speak, but he just couldn't.

Meredith walked slowly down the stairs making Derek even more anxious then he was when he first saw her. The closer she got, the more he wanted to just tare the costume off of her. Meredith made her way to Mark and Derek, Alex was staring at Addison's legs. "Hey!" She said giving them a smile, looking mostly toward Derek in his lab coat.

Derek's mouth moved, but again, no words came out causing Mark to chuckle at him.

Mark's attention focused on the blonde who was now walking down the stairs smiling at him. He lowered his sunglasses to the tip of his nose using his right index finger. She was beautiful, not that she wasn't usually, she's naturally beautiful after all.

Izzie was wearing a long genie skirt that flowed to her ankles where she wore gold high heels, a bra like gold-brown top that had strings of bead hanging from it, her top half of her butterfly tattoo showing, as well as her belly button, and a gold and pink see through scarves that went from the side of her genie hat to below her chin back up to the other side of her genie hat, that was over her naturally curly hair. She slowly walked down the stairs, her left hand gently on the railing watching her step with her skirt. Mark securely fixated on her. She walked to Mark smiling at him.

Once she got to him, he was speechless as Derek was with Meredith, his sunglasses still at the tip of his nose. He exhaled saying the only word that came to mind at that moment, "Wow…"

"Is that a good wow, or a bad wow? I wasn't sure about this genie costume." Izzie said unsure as she looked down at the costume she was wearing.

Mark wanted to place a soft kiss on her now shaded pink lips that she had put lipstick on and glossed over and tell her that she took his breathe away, but he couldn't. He took his sunglasses off and held them in his left hand as he put right hand on her cheek, their eyes meeting. "You look beautiful." He said with sincerity and a soft smile which she returned.

"So, you want to head upstairs, and you know…" Alex said wiggling his eyebrows suggestively.

Addison rolled her eyes at him once again. "Not a chance in hell." She replied dryly.

Alex gave her costume a once over with his eyes. "Ironic." He said smirking.

"Are you going to speak soon, if not, I'm going to go get myself some tequila." Meredith said with a slight smile as Derek was still speechless. She glanced at the others before leaning over and whispering in his ear. "Let the party go on for a half an hour and we'll go upstairs and have a little party of our own. Would you like that?"

Derek looked at Meredith and quickly nodded his head vigorously causing Meredith to smirk at him.

"Oh! I have to put the finishing touches on something!" Izzie grabbed Mark's hand. "Come help me!" She walked to the kitchen, Mark's hand still in hers. "I forgot to set up the margarita maker."

"Margarita maker?" He asked a little surprised, he hadn't known about that.

Izzie nodded her head bending down to a lower cabinet to retrieve it. "Yeah, Meredith brought it, even though she's just content with tequila, which I learned as she took out all the bottles of it we had." She placed the box on the counter. "Could you get some of the liquor from the table, and the salt?"

Mark nodded. "Sure." He got three bottles of liquor and put them on the counter. Mark went over to the cabinet over the sink to get the salt, and he also got a wash cloth and a few paper towels and put them on the counter. "I think you'd need those."

Izzie looked over at the paper towels and wash cloth. She nodded and smiled. "Yeah, we probably will." She took the maker out of the box and set a few things up, along with the margarita glasses. Izzie took the plug and went over next to and above the sink where she plugged the plug in.

While she did that, Mark had put the box back to where it first had been.

Thirty minutes later, there was around twenty to twenty-five people had arrived. Seven of them were in the kitchen, making themselves margaritas, having snacks, drinking down shots of tequila, and talking. The party was going really well.

Addison and Alex had cups of beer in their hands. Nickel back was playing in the background. Addison was nodding her head to the beat of the song that was coming out of the sound speakers.

Alex sipped his beer in a cup and looked at where Meredith and Derek were sneaking upstairs. "Jeez, can they ever keep there hands off each other for one night?"

Addison also sipped her beer and looked where Alex was looking. She shook her head. "Nope."

Izzie walked to the front door and turned off the light switch that controlled the front porch light, which was close to the door on the wall, she didn't think it was a good idea to hand out candy to kids where some or most adults were almost drunk, definitely tipsy. She jumped a little when someone had softly told her 'hi' by her ear. Izzie smiled when saw it was just Mark.

Mark smiled at Izzie. "Sorry, didn't mean to scare you."

"It's okay." Izzie said with a smile.

Mark glanced at the living room, then looked back at Izzie. "The party's doing well."

She nodded. "It is."

Mark studied her features. Something was off, her party was doing really well. "Isobel, are you okay?" He asked her concerned.

Izzie looked him in his eyes. He was the only person who would ever really use her full name, and she would allow him to. She smiled softly at him. "Yeah, I'm fine. Just… I don't know, I just have this weird feeling in the pit of my stomach… Like something's about to wrong." She glanced at the ground, then looked back at him. "It's stupid…"

Mark smiled softly down at her. "It's not stupid." He pulled her in for a comforting hug. Her face buried in his chest. After a few seconds, he let go a little a gestured to the people in the living room. "You're having a party, you have the right amount of liquor, and everyone in getting along, nothing's going to go wrong." He looked back at her and kissed her forehead. "I promise."

Izzie smiled when he kissed her forehead. She nodded her head a little bringing her head back to his chest and resting it there. "As long as you promise."

Mark wrapped his arms around her and smiled as he kissed the top of her head. They were affectionate, they never kissed on the lips, but they both were always affectionate with one another. It was something that was natural to both of them, they just never jumped along the love train. "Want to go upstairs and hang out for a little while, to help get that feeling out of your stomach?"

Izzie nodded into his chest. "Yeah, but only for a little while." She took her head out of his chest and smiled up at him.

He smiled back as he took her hand and laced their fingers, glancing at the occupants of the living room. They walked upstairs to Izzie's room.

Addison and Alex watched as the two made their way upstairs. "You think that they…?" Alex said.

Addison shook her head. "As much as we want them to, they probably didn't. I mean, I think at least the whole party would of stopped to listen to them confessing there undying love for each other, they're that obvious." She said sipping her beer.

"Yeah…" Alex said nodding. He looked at Addison and smirked. "You want to-"

Addison cut him off sipping her beer again. "Not a chance." Causing Alex's face to drop in disappointment as he sips his beer.