Most likely

Everyone turned to see Lin Jian walking in with his nose in the air. Holding his left arm was a beautiful, tall young woman. She was wearing a short, black dress and a pair of 5-inch high heels as red as her hair. She looked elegant and charming with an infectious smile. 

Lin Jian's look was a huge contrast to hers. He was wearing what looked like a random outfit he had grabbed from his laundry basket. His jeans was in a slightly palatable condition but his t-shirt was too disheveled. His hair was messy too, making one wonder whether he had not had time to dress up. His friends knew him well enough to guess that he must have been up to something and didn't even bother to brush his hair before coming here. 

"Ruby?" Lanni did not pay attention to Lin Jian's look but was surprised when she saw the girl next to him. So the guy wasn't that useless after all. He had managed to charm Ruby. Although that was the case, she was uncomfortable.