A cocktail waitress in a white lace dress brought over a tray of champagne flutes. "Cristal?"

They each took a glass and toasted each other.

"To all of us," Mara said. Sure, it was a little cheesy, but she was allowed-she was a Hamptons It girl.

it pays to tip the valet well.

THEY FOUND AN UNOCCUPIED TABLE NOT FAR FROM where Amanda Hearst was in deep conversation with Andre 3000. Puffy's annual barbecue was the perfect mix of old money and mo' money. Waspy blue bloods traded tall tales with gold-toothed gangbangers. New York's fanciest socialites boogied down with Hollywood hotshots and hip-hop stars. A white Moroccan-style tent was set up on the grounds, and belly dancers in ivory-and-pearl-embossed ensembles were clacking their finger cymbals as they gyrated through the crowd.

"Check it out! His logo is, like, everywhere!" Mara said. Their host's monogram was engraved into the bottom of the pool, on the napkins, even on the towels that hung in the bathrooms. In fact, on every beach, bath, and dish towel on the premises.

"Yeah." Eliza sighed. Somehow the fact that she had scored a legitimate invitation to the best party of the season didn't do anything to improve her mood.

"Don't be so down," Mara said. "It's our last night together!"

Eliza managed a weak smile. "I know. I'll try."

Jeremy had never bothered to call. He said he needed time to think about it, but for Eliza time had run out. Kit, the only friend who still talked to her after she was "outed" as poor, had offered to drive her back to the city next day, and she had a ticket on the Greyhound back to Buffalo.

"Who knows, he might surprise you," Mara said.

"I know. I felt like it might still work out," she said a little hopelessly. "I gave him my number at home. Who knows, maybe he'll call me still."

"If he doesn't, there are a million other guys who would die to go out with you," Mara said loyally. She would never have thought she could be best friends with someone like Eliza-but there you had it.

"Maybe," Eliza said. The summer had been spectacular-but humbling as hell. Before this summer the thought that she would lose her heart to the gardener was laughable, even ludicrous. She was Eliza Thompson; she could have anyone she wanted.

But Eliza Thompson didn't get everything she ever wanted anymore. She was starting to learn that.

Lindsay and Taylor walked by. They did a double take when they saw Eliza. What was she doing here? Nevertheless, they decided to stop by Eliza's table and say hi. They could show her how bighearted and generous they could be. Besides, it wasn't like they were going to have to hang out with her in the city anyway. They knew all about Buffalo.

But when they walked up to the table, Eliza looked the other way. Eliza knew it wasn't their fault they were the way they were, but that didn't mean she had to pretend to like them anymore. The truth was that she never really liked them. Not really. Not in the way she liked Mara and Jacqui.

"Um, hi?" Lindsay said.

Taylor cleared her throat.

Eliza pretended to be extremely fascinated by the contents of her cocktail glass as she purposefully ignored them.

The two girls stood there as Ryan, Mara, and Jacqui smirked without saying anything.

And with that, they flipped their perfectly Sahag-layered hair and walked away in their four-hundred-dollar shoes, and for the first time Eliza was really, truly happy to see them go. She went back to staring at the bubbles in her glass, thinking about how none of this really mattered to her anymore. How much money she could have saved on bags alone if she'd realized that a few years ago. How she'd give up her Marc Jacobs Stella bag, her orange Tod's purse, her black Prada bag that was the same as Gwyneth's just to have another shot with Jeremy.

And then, as if she'd finally thought the magic words, Jeremy appeared.

"Hey, Eliza," Jeremy said. He was wearing a white valet uniform. He had his hands in his pockets and he looked utterly miserable.

"Jeremy! What are you doing here?"

"I got a job parking cars," he said.

"Why?"

"I knew you would be here. I wanted to see you," he told her.

"You did?" She seemed so small and vulnerable just then, and for once she wasn't trying to be like anything but who she was.

The rest of the table took that as their cue to make a graceful exit.

Eliza stood up. She looked into his eyes and saw how much she'd hurt him.

"I didn't want you to leave thinking that I didn't care," he said.

Her eyes misted with tears. Real tears this time. She wanted to jump into his arms, wipe that awful, wretched look off his face, and tell him that nothing mattered-it didn't matter that they had been apart for so long-what was important was that he was here now.

So that's exactly what she did.

In front of Puffy, Demi, Leo, and her two ex-friends, Eliza leapt from her seat and threw herself in his arms.

Caught off guard, Jeremy fell backward, and the two of them tumbled on the grass, hugging and kissing and smiling at each other. Screw the Versace dress-she was with Jeremy.

"Oh my God . . . what the hell! Is that Eliza kissing the valet?" Lindsay asked, an eyebrow raised.

"You know what, he is kind of cute," Taylor allowed.

And finally they started to see: Eliza knew something they didn't.

it's called karma.

JACQUI SMILED AT ELIZA AND JEREMY. MARA AND RYAN were cuddling by the pool, and Jacqui thought she would just slip away. All her friends looked pretty busy. She was thrilled for them but a little sad for herself, too. She certainly hadn't bargained for the kind of summer she had ended up having.

She shook her head at the passed tray of canapes.

But she did help herself to a goody bag at the exit. A crisp white shopping bag emblazoned with the ubiquitous logo contained a white terry cloth robe, terry cloth slippers, and a bottle of Absolut (the party's corporate sponsor that year).

"Leaving so soon?" A very handsome and very familiar-looking guy stopped her on the way to the gates.

"You look even more beautiful when you aren't crying." He smiled. "So I guess your summer ended up getting a lot better?"

It was Nacho Figueroa-the hot Argentinean polo player from the big match!

"Hey! Jacqui, right?" She turned, and standing by the Mister Softee truck parked in the driveway (you never know what the guests will want if they get the munchies) was Eliza's friend Kit-the nice guy who had given them their party invitations.

"Hi, Kit," she said, kissing him hello.

Kit beamed. Nacho took a step back, a quizzical look on his face.

She smiled at both of them, but just then her cell phone rang. "Espere um momento," she told Nacho. "Excuse me," she told Kit.

"Pronto?"

"Jacqui, it's Luke. Your Luca." He was obviously drunk, but Jacqui wanted to know what this was all about.

"Si?"

"Someone called my house at three in the morning and my girlfriend-I mean, my ex-girlfriend-she flipped. We broke up, and, well, I miss you, Jac, I really do."

"Oh, pobre babe," Jacqui said scathingly.

"And she's with Leo now, can you believe it?" He was slurring a little. "What is it about that guy? One eye isn't even quite straight."

"So what do you say? Me and you? I know you don't like to be alone," Luke breathed. "And I'm so lonely."

Jacqui laughed to herself. So there was justice in this world after all. "That's a shame, Luca. But nien. Ciao."

She turned the phone off and turned back to Kit and Nacho. Hmm . . . the rakish polo player or Eliza's childhood friend?

Jacqui paused for a moment. Isn't "polo player" just a long way of saying "player"? Nacho seemed nice, but Jacqui was tired of men who played games.

"Drive me home?" she asked, linking an arm around Kit's. "Ciao ciao, Nacho."

Kit grinned. Maybe they were wrong. Maybe nice guys did finish first.

it's the last night of summer, but it's the first night for other things.

A FEW MINUTES AFTER MIDNIGHT MARA CREPT UP THE stairs to their attic bedroom. She found Jacqui asleep in the top bunk.

"Jac? Are you awake?" she asked.

Jacqui raised her head. "Now I am."

Mara sat on the bed and took off her shoes. When she looked up, Eliza was walking through the door. "Hey."

She was glad all three of them were together on their last night.

Eliza sparkled in her white dress when she kicked off her shoes. "Help me with this, Mar," she said as she began pushing her single bed up against Mara's bottom bunk. "Get down here, Jac," she whispered.

The three of them snuggled on the one makeshift king-size bed, feeling comfort in the warmth of each other's bodies.

Eliza told them about how she and Jeremy got back together. "I just love him so much," she said, burying her face in the pillow at her own cheesiness. "But Buffalo is so far."

"I'm sure you'll see each other," Mara said. She could have slept in Ryan's bed, but she didn't want to for some reason. Their last week in the Hamptons had been something out of the middle part of Titanic-before the ship sank and everything was perfect and hot and steamy. But on the last night there, she wanted to be in the au pairs' room. It was the only thing that felt right.

Jacqui told them how Kit had offered all three of them a ride back to the city in his car. That was good. At least they wouldn't have to take the Jitney. So why were they all so bummed?

"We'll see each other at Christmas," Eliza said, voicing the emotion they were all feeling. They were going to miss each other. They had gone through a lot this summer. "Just think, we'll need winter bikinis!"

"In Palm Beach," Mara said dreamily. Another chance to get out of Sturbridge.

"What's it like?" Jacqui asked.

"Awesome," Eliza yawned. "Parties and galas and we'll all need new clothes!" Her eyelids dropped. Mara was falling asleep, too. Jacqui turned on her side, grabbing for the covers.

Their summer was over. They had done everything they wanted to do and some things they shouldn't have. Tomorrow they would drive out on the Montauk Highway for the last time. They would return home older, wiser, and certainly more glamorous.

In the end, it had been best summer of their lives. Maybe there was truth in advertising after all.

acknowledgments.

Many heartfelt thanks to the wonderful folks at 17th Street-my absolutely fabulous editor, Sara Shandler, the inspiring Josh Bank, and the encouraging Ben Shrank. Thanks to Les Morgenstein for invaluable insight. Immense gratitude to Emily Thomas for all her brilliant ideas. Thanks to Claudia Gabel and Jennifer Unter for thinking of me for this project. As always, I'm very grateful to Deborah "superagent" Schneider, a guardian angel in high-heeled shoes.

Thanks to Jason Oliver Nixon, Andrew Stone, Paige Herman, and Juliet McCall Dyall at Hamptons magazine for giving me a reason to write off my summer rental. Thanks to Karen Robinovitz, my partner in crime, an invaluable resource and a true friend.

Thanks to the de la Cruz and Johnston families for all their support. Thanks to my dad for letting me hog his computer to write this book when mine broke. Thanks to my mom for asking if the naughty parts would be "normal or perverted" (I've never laughed so hard, Mom!) Thanks to "Hotel Chit" in New York. Thanks to Aina and Steve for sharing their stories about the Hamptons. Thanks to Kim, David, and Diva for a fantastic summer. Thanks to Jennie for coming out to visit. Thanks to Tristan, Gabriel, Tyler, Peter, Andy, and the rest of The Gang for being The Gang.

Thanks to my husband, Mike, for getting out of the city every Friday night, no matter how late it got.

Thanks dpgroup forum.

Spend another summer with the girls!