“I did everything,” joked Jessica Alba Thursday evening, overlooking the garnished tables from the terrace atop newly opened La Sirena in Chelsea. “I did the flowers, the table…”

Alba, who appears on InStyle’s July cover, was toasted by the magazine’s editorial director, Ariel Foxman, alongside designer friends including Prabal Gurung, Baja East’s Scott Studenberg and John Targon, and Jennifer Fisher, with cocktails and dinner at the Mario Batali hot spot.