We're not sure if Rock & Republic will ever be our favorite to wear, but we can say unequivocally that the folks who run the label and RADAR Entertainment, like, totally rule. Last night, they threw a party to "celebrate summer" at the Beatrice Inn. James Murphy of LCD Soundsystem D.J.-ed, and booze flowed like Amazonian rapids. As expected, much dancing and drunkenness occurred. Everyone was having such a blast that when it came time to shut down at 11:30 p.m., Rock & Republic designer Michael Ball just threw down a wad of cash (or whatever high rollers like him do) and bought out the open bar till the end of the night.

It's up for debate when, exactly, the party turned into a full-on rager. But we'd place it around midnight, when Australian pop singer Sia started a clear-the-floor dance-off with her girlfriend, JD Samson of Le Tigre. Frankly, those two were just one ball of hotness the whole night. Our friend who got to the party before us said Sia spent most of the night sitting in JD's lap, legs wrapped around her waist, "rubbing up all over her." Kirsten Dunst, too, was a dancing fiend (at one point we saw her do that "broken arm" dance move from the eighties), though she mostly stayed in the D.J. booth, where her friend and Beatrice house D.J. Matt Creed was spinning. We're happy to report that Dunst, who's in town filming the detective thriller All Good Things with Ryan Gosling, looked really healthy and didn't drink all night, as far as we could tell.

Through the sea of hot girls doing high kicks and finance-type boys dancing on tables, we spotted André Balazs, Proenza Schouler's Lazaro Hernandez, and a newly bleached blond Chris Benz. Susan Sarandon's daughter, Eva Amurri, who kinda blows Dunst off the hotness scale, showed up around 1:30 or 2 a.m. — who can remember at this point? — with an equally good-looking crew of friends, including actor Sebastian Stan, who once dated (or dates?) Gossip Girl's Leighton Meester. But we saw her kiss and exit with an unidentified tall, dark, and handsome boy from her posse. We left around three in the morning, after the D.J. went from the Beastie Boys' "Girls" to Biggie's "Juicy" and vintage Mariah Carey. There's only so much awesome a disaffected party reporter can take, you know? —Jada Yuan