I haven’t seen more cute, cool peeps in one place than last night at the launch of Tico’s, the downstairs lounge of Tijuana Picnic on Essex Street. Fashion goddess Giovanna Battaglia kicked her high heels up with Keegan Singh. Tabitha Simmons came straight from seeing her pal Karen Elson and The Citizens Band perform at Irving Plaza. Stavros and Theo Niarchos commanded a long table with Jessica Hart, PC Valmorbida, Andres Santo Domingo, Vito Schnabel, artist Aaron Young, Vladimir Roitfeld, and Tico Mugrabi, who everyone thinks Tico’s is named after. Owners Jean-Marc Houmard and Jon Neidich are the pied pipers of the pretty young things, filling Tijuana Picnic with all the right faces. I spotted literary mogul David Kuhn eating upstairs with GQ‘s Madeline Weeks near BlackBook editor Jacob Brown. Antonia Thompson Weisman was in town from London and Lily White was in from L.A. Who else was there? Waris Ahluwalia, Alexander Olch, Carly Cushnie and Michelle Ochs, Fiona Byrne, Manish Vora, Morgan Collett, Julie Henderson, Sydney Reising, Gigi Burris, Yigal Azrouel, Charissa Kinley (in vintage Gucci by Tom Ford), Happy Massee, Jason Lee, Jamie Johnson, Lissy Trullie, Johannes Huebl, Lauren Remington-Platt, Victor Glemaud, and Vogue.com “Breathless” sex columnist Karley Sciortino, to name a few. Onetime hardcore party girl Mischa Barton showed up after midnight, just as the evening really started to get crazy. Well timed, Mischa.