Holly Madison and Camille Grammer Attend One Night for One Drop in Sin City

Posted Saturday March 22, 2014 1:13 PM GMT

Helping celebrate World Water Day, stars hit up Mandalay Bay Resort & Casino for the "One Night for One Drop" event in Las Vegas on Friday (March 21).

Showing off her new red tresses, Holly Madison donned a one-shoulder shiny blue dress with peep-toe heels while Camille Grammer chose a simply chic sleeveless little black dress.

According to the website, "One Night for ONE DROP is a joint effort between Cirque du Soleil and MGM Resorts International in support of ONE DROP’s water-access global initiatives, along with innovative water education programming in Nevada through a partnership with the Las Vegas Springs Preserve."

Guests at the event were treated to a performance by The Tenors as well as dazzling numbers from the Cirque du Soleil troupes.

Photo Credit: Wenn.com

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