Sarah

Sarah is the fiancée of Zack Johnson.

Overview
Sarah was supposed to have dinner with Zack, Leonard and Penny at a restaurant, but she couldn't make it because she had an emergency. During dinner, Zack offered Penny a job at his menu company. When Leonard and Penny discussed this, Penny called Zack to tell him she'll take the job, but there was bad news: When Sarah found out that her fiancé was offering a job to his ex-girlfriend, she said it was a stupid idea and she threw a shoe at Zack and left a little bump on his forehead.