Kourtney Kardashian hosted a season preview at Marquee Dayclub at The Cosmopolitan of Las Vegas on Saturday afternoon. 

She  brought a group of friends to Vegas for the day enjoy the pool party.  She arrived in a breezy Roberto Cavalli animal print dress and on the red carpet shared that boyfriend Scott Disick is doing well in rehab. She said Mason is a great big brother, that her kids have play dates with their cousin North West all of the time, and that the whole family tries to get together to watch Keeping Up With The Kardashians each week.  The group took over a grand cabana, enjoying Champagne and signature dishes as fans screamed her name.  She made her way to the DJ booth where she set off the first fireworks of the Dayclub season with headliner Cash Cash.

Sia joined the festivities at Marquee Dayclub in support of Whole World Water. The Australian singer and songwriter showcased one of her signature face-obscuring headpieces and wore a red Whole World Water bracelet in honor of World Water Day, which is Sunday, March 22. Marquee Dayclub donated 100% of the proceeds from sales of the bracelet and 10% of all bottled water sales for the day to the Whole World Water Fund, which is used to fund clean and safe drinking water initiatives around the world.

Las Vegas’ newest nightlife destination OMNIA Nightclub at Caesars Palace welcomed international superstar Miley Cyrus as she hosted an unforgettable evening inside the venue’s exclusive ultra-lounge, Heart of OMNIA. Hot off the heels of an unrivaled opening weekend, the nightspot continued the excitement as thousands of patrons gathered to see the pop sensation as she enjoyed a night out in true Vegas fashion.

Photo Credit: Denise Truscello/WireImage