• Lauryn Hill treated passing guests at Andre Balazs’ Standard Miami to an impromptu acoustic set that lasted nearly two hours in the spa hotel’s lobby.

• "Desperate Housewives" star Ricardo Chavira and "The O.C.’s" Nicholas Gonzalez bought rounds for the crowd at Manhattan’s Cain during the anniversary party for the club’s popular Bunny Chow party, while Estella Warren, Michelle Trachtenberg and "Conviction" star Eric Balfour partied nearby.

• Jimmy Fallon tried to cozy up to Jamie Lynn Sigler at the Do Something BRICK Awards at Capitale, but the "Sopranos" star, who is dating Butter owner Scott Sartiano, brushed off the funnyman’s advances. Elsewhere at the Kohl’s-sponsored fete, Susan Sarandon asked organizers to change seating so she could be next to Mary-Louise Parker.

• Ashton Kutcher, Usher, Andre Harrell, Irv Gotti and Sky Nellor got down at Sean Combs’ party at the G Spa and Lounge in the Gansevoort Hotel in Soho Manhattan. Puffy played tracks from his new R&B singer Cheri Dennis’ CD, out in June.