Lavo Nightclub hosts birthday celebration of socialite Tinsley Mortimer of "High Society" with her sister, Dabney Mercer.

Saturday night Tinsley Mortimer continued her Vegas birthday celebration at Lavo at the Palazzo.  The socialite and star of High Society was joined by friends including boyfriend Brian Mazza and sister Dabney Mercer. Without talking beforehand the sisters each wore emerald green mini dresses.  Normally a fashion faux pas, they embraced the moment and posed for photos, with Mortimer in Diane von Furstenberg paired with Versace heels while Mercer donned Amanda Uprichard. The group enjoyed a dinner of Lavo favorites before heading up to the nightclub where she was surprised with a Gimme Some Sugar cake that was an exact replica of a handbag from her line. Mortimer was amazed by the spot-on detail of the ruffles and her emblem. Everyone toasted to the birthday girl with Dom Perignon champagne.

Kid Sister, who is hosting at Tao Beach at the Venetian today, dined at Lavo as well, feasting on Kobe meatballs, sea bass and tuna tartare. She then hit the nightclub to catch a special deejay set by Tatiana Fontes and danced the night away while sipping Grey Goose cocktails.

Also spotted in the club, was Hunter Parrish from Showtime’s Weeds. The actor and friends drank Belvedere cocktails while taking in the scene and being entertained by a group of girls celebrating a bachelorette party nearby.

Over at Tao at the Venetian, Frank Vincent of Raging Bull, Goodfellas and Casino, Steve Schirripa from The Sopranos and members of the Las Vegas Mob Experience team were spotted in the dining room. Lobster wontons, crispy rice, satay bass and other favorites from the Asian bistro were enjoyed, along with cocktails and espresso.