Fifteen: She Steals For You, And This Is How You Repay Her.

Mona emerged from the Saks dressing room in a square-necked, sheer green Calvin Klein dress. Its full skirt fanned out as she twirled. "What do you think?" she asked Hanna, who was standing at the racks right outside.

"Gorgeous," Hanna murmured. Under the dressing room's fluorescent lights, she could tell Mona wasn't wearing a bar.

Mona posed in the three-way mirror. She was so skinny, sometimes she dipped down to an enviable size zero. "I think this might be better with your coloring." She pulled at one of the straps. "You want to try?"

"I don't know," Hanna said. "It's kind of see-through."

Mona frowned. "Since when do you care?"

Hanna shrugged and looked through a rack of Marc Jacobs blazers. it was Thursday evening, and they were at the designer department of Saks in the King James Mall, frantically searching for Foxy dresses. A lot of prep school and out-of-college-but-living-in-the-estate-with-the-'rents girls attended, and it was important to find a dress that five other girls wouldn't be wearing.

"I want to look classy," Hanna answered. "Like Scarlett Johansson."

"Why?" Mona asked. "She's got a big ass."

Hanna pursed her lips together. When she said classy, she meant subtle. Like those girls in those diamond ads who looked sweet but had the words fuck me airbrushed into a strand of their hair. Sean needed to be so entranced by Hanna's virtue, he'd reject his V Club vows and tear her underwear off.

Hanna picked up a pair of peep-toe, camel-colored Miu Miu shoes from the sale shelf just outside the dressing room. "I love these." She held one up for Mona to see.

"Why don't you…?" Mona nudged her chin down to Hanna's bag.

Hanna dropped them back on the shelf. "No way."

"Why not?" Mona whispered. "Shoes are the easiest. You know that." When Hanna hesitated, Mona clucked her tongue. "You're still freaked about Tiffany?"

Instead of answering, Hanna pretended to be interested in a pair of metallic Marc Jacobs sling-backs.

Mona pulled a few more things off the racks and went back into the changing room. Seconds later, she emerge empty-handed. "This place blows. Let's try Prada."

They walked through the mall, Mona typing on her Sidekick. "I'm asking Eric what color flowers he's getting me," she explained. "Maybe I'll match my dress to them."

Mona had decided to go to Foxy with Noel Kahn's brother, Eric, who she'd hung out with a few times this week already. The Kahn boys were always safe Foxy date—they were good-looking and rich, and society photographers loved them. Mona tried to coax Hanna into asking Noel, but she'd waited too long. Noel had asked Celeste Richards, who went to the Quaker boarding school—a surprise, since everyone thought Noel had a thing for Aria Montgomery. Hanna didn't care, though. If she wasn't going with Sean, she wasn't going with anyone.

Mona looked up from her texting. "Which spray-on tan place do you think is better, Sun Land or Dalia's? Celeste and I might go to Sun Land tomorrow, but I think they make you look orange."

Hanna shrugged, feeling a pang of jealousy. Mona should've been going tanning with her, not Celeste. She was about to answer, when her own phone rang. Her heart sped up a little. Whenever her phone rang, she thought of A.

"Hanna?" It was her mom. "Where are you?"

"I'm out shopping," Hanna answered. Since when did her mom care?

"Well, you need to go home. Your father is stopping over."

"What? Why?" Hanna glanced at Mona, who was checking out the cheapo sunglasses at an esplanade kiosk. She hadn't told Mona that her dad had visited on Monday. It was too weird to talk about.

"He just…He needs to pick something up," her mom said.

"Like what?"

Ms. Marin let out a flustered snort. "He's coming over to get some financial paperwork we need to settle before he gets married. Is that enough explanation for you?"

A prickly sweat gathered on the back of Hanna's neck. One, because her mom had mentioned what she hated to think about—that her dad was getting married to Isabel, and he would be Kate's father. And two, she'd sort of thought her dad might be stopping by to see her, specifically. Why should she go home of he was coming for another reason? It would look like she didn't have a life. She checked her reflection in the Banana Republic window. "When's he coming?" she asked.

"He'll be here in an hour." Her mother abruptly hung up. Hanna snapped her phone closed and cradled it between her hands, feeling its warmth seep into her palms.

"Who was that?" Mona singsonged, linking her arm through Hanna's.

"My mom," Hanna said distractedly. She wondered if she'd have enough time to shower when she got home; she reeked of all the different perfumes she'd sampled at Neiman Marcus. "She wants me to go home."

"Why?"

"Just…because."

Mona stopped and eyed Hanna carefully. "Han. Your mom doesn't just randomly call to summon you home."

Hanna stopped. They were standing in front of the entrance to Year of the Rabbit, the mall's upscale Chinese bistro, and the overpowering smell of hoisin sauce wafted into her nostrils. "Well, it's because…my dad's coming over."

Mona frowned. "Your dad? I thought he was—"

"He's not," Hanna said quickly. When Mona and Hanna became friends, Hanna told Mona that her father was dead. She'd vowed never to speak to him again, so it wasn't exactly a lie. "We weren't in touch for a really long time," she explained. "But I saw him the other day, and he has business in Philly or whatever. He's not coming over today because of me. I don't know why my mom wants me there."

Mona put one hand on her hip. "Why didn't you tell me before?"

Hanna shrugged.

"So when did this happen?"

"I don't know. Monday?"

"Monday?" Mona sounded hurt.

"Girls!" interrupted a voice. Hanna and Mona looked up. It was Naomi Zeigler. She and Riley Wolfe were coming out of Prada, blacking shopping bags slung over their perfectly spray-tanned shoulders.

"Are you shopping for Foxy?" Naomi asked. Her blond hair was lustrous as ever and her skin glowered irritatingly, but Hanna couldn't help note that her BCBG dress was last season's. Before she could answer, Naomi added, "Don't bother with Prada. We bough the only good stuff."

"Maybe we've already got dresses," Mona said stiffly.

"Hanna, you're going, too?" Riley widened her brown eyes and tossed her shiny red hair. "I thought maybe since you aren't with Sean…"

"I wouldn't miss Foxy," Hanna said haughtily.

Riley put her hand on her hips. She was wearing black leggings, a frayed denim shirt, and a fugly black-and-white striped sweater. Recently there had been a paparazzi shot of Mischa Barton wearing the exact same outfit. "Sean's so beautiful," Riley purred. "I think he got even cuter over the summer."

"He's totally gay," Mona said quickly.

Riley didn't look worried. "I bet I can get him to change his mind."

Hanna clenched her fists.

Naomi brightened. "So, hey, Hanna, the Y is awesome, huh? You'll have to take the Pilates class with me. The instructor, Oren? Gorgeous."

"Hanna doesn't go to the Y," Mona interrupted. "We go to Body Tonic. The Y is a shithole."

Hanna swiveled from Mona to Naomi, her stomach fluttering.

"You don't go to the Y?" Naomi made the most innocent face she could. "I'm confused. Didn't I see you there yesterday? Outside the elliptical room?"

Hanna grabbed Mona's arm. "We're late for something." She dragged her away from the Prada store, back in the direction of Saks.

"What was that all about?" Mona asked, skirting gracefully around a horsey woman laden with shopping bags.

"Nothing. I just can't stand her."

"Why were you at the Y yesterday? You told me you were seeing the dermatologist."

Hanna stopped. She'd known seeing Naomi before V Club was trouble. "I…I had something to do there."

"What?"

"I can't tell you."

Mona frowned, then whirled around. She took determined, stiff steps into Burberry. Hanna caught up with her. "Look, I just can't. I'm sorry."

"I'm sure you are." Mona started digging through her purse and pulled out the camel-colored Miu Miu from Saks. They weren't in their box, and the security tag had been ripped off them. She dangled them in front of Hanna's face. "I was going to give these to you as a present. But forget it."

Hanna's mouth fell open. "But…"

"That thing with your dad happened three days ago, and you never told me about it," Mona said. "And now you're lying to me about what you're doing after school."

"It's not like that at all…" Hanna stuttered.

"It looks that way to me." Mona frowned. "What else are you lying about?"

"I'm sorry," Hanna squeaked. "I just…" She looked down at her shoes and took a deep breath. "You want to know why I was at the Y? Fine. I went to Virginity Club."

Mona's eyes widened. Her cell phone rang in her bag, but she made no motion to get it. "Now I hope you're lying."

Hanna shook her head. She felt a little nauseated; Burberry smelled way too much like its new perfume.

"But…why?"

"I want Sean back."

Mona burst out laughing. "You told me you ended it with Sean at Noel's party."

Hanna glanced into Burberry's window and nearly had a heart attack. Was her butt really that chunky? She suddenly had the same proportions as dorky, fat Hanna of the past. She gasped, looked away, and looked again. Normal Hanna stared back. "No," she told Mona. "He ended it with me."

Mona didn't laugh, but she didn't try to comfort Hanna, either. "Is that what you were at his dad's clinic, too?"

"No," Hanna said quickly, forgetting that she'd seen Mona there. Then, realizing that she might have to tell Mona the real reason, she backtracked. "Well, yeah. Sort of."

Mona shrugged. "Well, I sort of heard Sean broke up with you from somewhere else, anyway."

"What?" Hanna hissed. "From who?"

"Maybe in gym. I don't remember." Mona shrugged. "Maybe Sean started it."

Hanna's eyesight blurred. She doubted Sean had told…but maybe A had.

Mona considered her. "I thought you wanted to lose your virginity, not prolong it."

"I just wanted to see what it was like," Hanna said softly.

"And?" Mon pursed her lips mischievously. "Give me the dirt. I bet it was hilarious. What did you talk about? Did you chant? Sing? What?"

Hanna frowned and then turned away. Normally, she'd have told Mona everything. Except it stung that Mona was laughing at her, and she didn't want to give her the satisfaction. Candace had so plaintively said, This is a safe space. Right now, Hanna didn't feel she had the right to give up anyone's secrets, not when it looked like A was giving up hers. And why, Mona had heard a rumor about her, hadn't she said anything? Weren't they supposed to be best friends? "None of that, really," she murmured. "It was pretty boring."

Mona's face had held a look of expectation; now it wilted in disappointment. She and Hanna stared at each other. Then Mona's cell rang and she looked away.

"Celeste?" Mona said when she answered. "Hey!"

Hanna chewed nervously on her lips and looked at her Gucci bracelet watch. "I have to go," she whispered to Mona, gesturing toward the mall's east exit. "My dad…"

"Hold on," Mona said into her phone. She covered the receiver with her hands, rolled her eyes at the Miu Miu shoes, and shoved them at Hanna. "Just take these. I actually kind of hate them."

Hanna backed away, holding the stolen shoes by their straps. All of a sudden, she kind of hated them too.