Happy birthday, Mrs. West! Wearing a slinky, cleavage-baring dress that complimented her hourglass figure, Kim Kardashian celebrated her 34th birthday at the posh Venetian Hotel and Casino’s TAO nightclub in Las Vegas on Friday night with family and friends. The list included husband and rapper Kanye West, mother Kris Jenner and sister Khloé Kardashian, Jonathan Cheban and Simon Huck, and her glam squad, makeup artist Mario Dedivanovic and hair stylist Jen Atkin. The birthday girl wore a ruched white dress with a V-neck waist-skimming plunging neckline, a favorite style worn at past events and on the show. Kim said on her Instagram page, “Vega$ Nights have begun.”