Actresses Allison Janney, Kate Walsh and Sara Ramirez were spotted at a VIP table taking in the scene inside The Library at Marquee at the Cosmopolitan of Las Vegas, while DJ Tiesto made a late-night stop in the main room to check out the EC Twins.

Just one day after Holly Madison announced that she insured her breasts for $1 million, the buxom blonde beauty exposed her bare arms only on Friday night at Surrender Nightclub at Encore Las Vegas.

At noon today, Margaritaville Casino at the Flamingo opened its doors for the first time to a crowd of hundreds who had been waiting for the opening all morning.

Last night, one of mainstream radio’s hottest names took Sin City by storm when Mike Posner performed live at Pure Nightclub at Caesars Palace.

The Venetian and the Palazzo kicked off the second annual Festivino, a celebration of Bordeaux throughout October, with a wine tasting event tonight in the Palazzo waterfall atrium and gardens.

Last night, Tryst Nightclub at Wynn Las Vegas celebrated resident DJ Jermaine Dupri’s 39th birthday alongside thousands of fans.

EPMD hosted Lavo’s Old School Wednesday last night at the Palazzo.

David Barton, owner of DavidBartonGym, who recently announced a new outpost opening in Las Vegas in December 2011, hosted a  “A Very Fashionable Luncheon” on Tuesday afternoon along with The Clearity Foundation founder Dr. Laura Shawver, Suzy Molasky, Michelle Epstein and Cathy Seiff at the Vintner Grill Strip at Neiman Marcus at Fashion Show mall in Las Vegas to celebrate “Diane’s Day.”

They mixed. They mastered. They worked tirelessly to create a fist pump-worthy track. Now, seven finalists competed on the ones and two for a chance to win the Vegas Spin-Off last night and compete for the grand prize. The seven finalists include: Dereksen Beck, Eric De La Torre, David Veith, Josh Abrams, Nicholas Gianopoulos, Ted Vinzon and Timothy Wong.