Authors note: I just couldn't help myself. I love this story. But I felt like throwing in a few of my OWN characters…

Disclaimer; I only own a few people. Not enough to make a difference…

Green. Green tank top, pale blue mini skirt, and green heels. Long, wavy black hair that hung to her waist. A button nose and full pouty lips, with huge sparkling hazel eyes. Katherine Montgomery was beautiful. Beautiful for only 18. She had her sister's height and fiery temper. That was where their similarities ended. Katherine, or Kat, as she was called, went after what she wanted, and always got it. Always. She was supposed to be an intern in a few weeks. She had chosen Seattle Grace.

Everyone stared blankly when she said she was going to be an intern. She was only 18! But she had graduated high school at 11, a genius. She was envied and hated by most people. She didn't ask for it. She was never really mean to anyone. She was just smart.

The next morning after she landed in Seattle, Kat went to Seattle Grace to check out the hospital. She was also ready to see someone she hadn't seen since she was 7. Her older sister, Addison…

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Addison was not having a good day. Mark had made a big deal out of her saying Alex's name, and she was trying to keep Alex from giving her "the eyes". That was what she referred to them in secret. When he would look at her and his eyes held nothing but longing and respect. She wanted nothing but to kiss him in front of everyone. But she wouldn't. She would look away and pretend she saw nothing. She had lied. She had requested Christina Yang as her intern instead of Alex.

Christina had been watching her closely all day. She could see Addison was always looking over her shoulder for Alex. She was really paranoid. She must have done something bad to want to avoid him this much.

"You should talk to him, you know that, right?" she said, keeping her eyes on the chart in front of her.

"What? Who-who are you.." Addison stuttered, alarmed.

"Alex," Christina said coolly. "He went on a date yesterday with Izzie and called YOUR name when she kissed him. When she made a big deal out of it, he defended you. Hardcore. Like stand in her face and yell. I just think after all the trouble he went through, he deserves more than just being ignored."

Addison stared blankly at her intern for a second. "How on earth did you become so perceptive, Yang?"

"Being left at the altar does that to you, Dr. Montgomery," Christina said nonchalantly. She picked up the chart and walked away. Addison pulled out her phone to send Alex a message when something caught her eye. An impossibly beautiful girl with impossibly tall heels on was walking toward her. Not only did she have her nose, she had the same power over men that she did. Their eyes all followed her.

"Kat?" she whispered.

"Addison?" she said, equally quietly.

"What are you doing here?" she asked.

"I will be an intern here in a few days," Kat answered with a flip of her perfect hair.

"An intern? But your…only…"

"18? Yes, I am aware of my age, sister," Kat answered cheekily. "If you had called home at all, you would have known that I graduated high school at 11. A genius they call me. I just think Im oddly ambitious."

"You always were, weren't you?" her sister answered, just as coolly.

"You picked the perfect hospital," Kat said. "All the men are hot. I cant wait to start working here."

"Oh boy." Addison said. Alex watched from afar and could see the girl's were somehow connected. He grabbed a chart and walked up to them.

"Dr. Montgomery, Dr. Yang told me to give these to you," he said, looking the other girl up and down.

"Thank you, Ale—Karev," Addison said, smiling. "This is my baby sister, Katherine."

"You can call me Kat," the girl said, extending her hand. "Well, sis, I need to talk to the Chief, so Ill see you later." She waved and walked away, walking perfectly in her heels and swinging her hips just enough to catch attention.

"When you say "baby" how old is she?" Alex asked Addison.

"18," she answered.

"And she-"

"Yeah."

"But she's only,"

"I know." Addison seemed to awaken to his presence just then. She looked and saw how close they were standing and breathed in sharply. She spun around and walked away, leaving Alex stunned in her wake.

"I have got to stop that," she said, shaking her head.