Marc Malkin

Dara Kushner/INFphoto.com

Paris Hilton's in a New York state of mind.

The spotlight-hoggin' hotel heiress helicoptered from Manhattan to the Hamptons yesterday to shoot her searching-for-a-best-friend MTV reality show. She and the remaining contestants were chauffeured in Cadillac Escalades to the Estate, a private Sag Harbor manse owned by nightlife impresarios Eugene Remm and Mark Birnbaum.

After enjoying a couple hours of lunch and some poolside lounging, they 'coptered back to Manhattan.

Later in the night—with cameras in tow—they trekked to Tenjune at about 12:30 a.m. and stayed till about 2 a.m. Believe it or not, Ms. Hilton kept things mellow by laying off the booze and drinking Snapple antoxidant water for most of the evening. (Let the pregnancy rumors begin—again!)

Also maintaining control were the show's producers, who were trying to keep a lid on things and not reveal who the contestants were in the club. "All of a sudden there were a ton of girls everywhere, so you didn't know who was who," an eyewitness said. "You really had no idea what they were doing. Paris stayed in one spot, danced, hung out and then left."

Hilton's boyfriend, Benji Madden, was by her side looking fresh as a daisy.

And no wonder! On Wednesday night, Madden was at philanthropist Maria Bell's L.A.-area estate for Cartier's LoveCharity Bracelet shindig. A source tells me Madden took a shower at Bell's place before leaving because, he explained to the host, he was about to jump on a plane to New York to meet up with Hilton. Cleanliness is next to godliness—and next to Paris.