Sapphire’s 9th Anniversary Party The Rat Pack is reuniting! Well, via surface streets, anyway. Sapphire celebrates nine years Thursday night, while also commemorating the name change of a nearby stretch of Twain Avenue (between Frank Sinatra and Dean Martin) to Sammy Davis Jr. Parkway. Break out your vintage threads (“old Vegas attire” is encouraged), and sip free drinks from 7 to 10 p.m. A toy drive, raffles and live performances by Rat Pack impersonators and Zowie Bowie complete the milestone merriment. December 15, 7 p.m., free entry.

Bad Santa Party at Tao Did you ditch the “nice” routine this year to be a little naughty? Then this holiday party is for you. Dress to impress, as the Venetian venue is searching for both the ugliest sweater and the naughtiest Santa’s helper of the night. Clubgoers can also take photos with the night’s debauched St. Nick. December 15, doors at 10 p.m., $20 men, $10 women, locals free.

Soul Kitchen at Vanguard The Fremont East lounge puts on a Christmas edition of its monthly house-music party. Bringing the noise are DJs Frenchy, Mikeytown and Edgar Reyes. December 15, 10 p.m., free entry.

Stocking Stuffer at Artisan Crush presents a Christmas edition of its smoke-free LGBT party Friday night. Patrons can pose for photos with a sexy Santa and enjoy beats by DJ John Joseph. Games, giveaways and a guest appearance by Brandi Glanville (of Real Housewives of Beverly Hills fame) complete the festive fête. December 16, 9 p.m., free entry.

A Night of Beats at The Bunkhouse It’s no secret Las Vegas is becoming a global electronic dance music destination. But if it’s hip-hop you crave, head Downtown Friday night. Hip-hop producers, including Georgia Anne Muldrow, Phil A, Whatfour and Shanestream, will play their own beats at the Bunkhouse. December 16, 10 p.m., $5.

Ashley Benson at Vanity Best known for her portrayal of Hanna in the teen drama Pretty Little Liars, Benson turns 22 at midnight and celebrates at the Hard Rock Hotel nightspot. December 17, doors at 10 p.m., $30 men, $20 women, local ladies free.

Snow Ball at Revolution It’s better to give than receive around the holidays, right? Get your mind out of the gutter—the Mirage venue presents a wintry edition of Closet Sundays with door proceeds benefiting the Southern Nevada Association of Pride, Inc. Enjoy $5 drinks all night and live performances by the 2011 Pride Festival royalty. December 18, 10 p.m., $20, locals free until midnight.

Don’t Sweat the Sweater at Ghostbar Did Grandma knit you something hideous for the holidays last year? Well, Ghostbar is hoping it sees more mileage than your family’s Christmas card photo. Resident DJs M!KEATTACK and Dave Fogg supply the sound, and prizes go to the clubgoer rocking the night’s ugliest sweater. If your relatives actually have fashion sense, may we suggest Savers? December 21, 10 p.m., $20, local ladies free.