Popular Gossip Girl, Leighton Meester performed at Klutch’s opening night party on Tuesday in the former Opium space.  Attendees included the “fierce” Christian Siriano (Project Runway winner) along with his boyfriend, Colin Egglesfield, (former Melrose Place cast member) and the delectable Kellan Lutz (better known as Emmett Cullen in the Twilight series). Lutz was also spotted throughout the weekend at the Florida Room and at the Shore Club pool along with on-and-off-again love interest, Annalynne McCord.

Meester was seen lounging by the pool at the Shore Club and at the Mondrian’s Sunset Lounge, last week as was Stacey Keibler (Dancing with the Stars).

Matisyahu performed at the Florida Room on Saturday night.

Ashley Hamilton, George Hamilton’s adorable offspring, was seen at the Delano enjoying cocktails at the bar.  Also at the Delano: gorgeous former Victoria’s Secret Angel, Stefanie Seymour, Jaime Foxx and Jared Leto (not together).

The Viceroy was a Hip Hop hot spot with the likes of P. Diddy, Rick Rock, and Busta Rhymes enjoying the spa over the weekend.  Jamie Foxx and DJ Sky Nellor celebrated 2010 a day early at the Viceroy’s Club 50. Foxx was also seen dining at Mr. Chow at the W South Beach, as were Pauly Shore, Mike Piazza, Kedar Massenburg, and Oliverio Picasso, Pablo Picasso’s grandson.

New York Yankee, Alex Rodriguez worked -out at Equinox Fitness Club in Coral Gables.

Michael Jordan dined at Café Prima Pasta on Monday.  Dwyane Wade and Matt Damon hit the North Beach bistro on separate occasions last week.

Fergie and hunky hubby Josh Duhamel were seen this weekend at a private dinner held for the “winningest coach,” Don Shula.  At the tribute celebration Fergie sang “Happy Birthday” to the coach and gave a touching speech about how the Dolphins were a part of her childhood.  Later on, the handsome couple dined at STK Miami Beach along with Transformers director Michael Bay, actress, Robin Givens, writer/director Michael Mann, and Robert Iler of The Sopranos.  On Sunday, Fergie and Duhamel enjoyed the Dolphin game with Jennifer Lopez and Marc Anthony.

A couple of weeks ago, South Beach legend, Debbie Ohanian, a.k.a.  Debbie O.  (for those who new her when) hosted  a private birthday party for famed stylist, Danny Santiago, at her residence above  Barton G. Super-hot fashion designers, Proenza Schouler attended the party.