Chart-topping superstars Mary J. Blige and Gavin DeGraw will bring the heat to the snowy hills of Utah as they perform at the 20th Annual Deer Valley Celebrity Skifest on Saturday (Dec. 3) in Park City, Utah. The skiing and live music event will be taped as part of a one-hour CBS Sports special to air alongside NFL Football on Sunday, according to The Hollywood Reporter.

The Skifest is a charitable get-together that will benefit Robert F. Kennedy Jr.’s environmental organization Waterkeeper Alliance, which protects fresh water resources around the world. In previous years, the event has raised more than $500,000 to protect our water from contamination.

Among the celebrities attending the shindig include comedian-writer Larry David ('Curb Your Enthusiasm'), actor Hill Harper ('CSI: NY'), actress Cheryl Hines ('Suburgatory') and Robert F. Kennedy Jr., himself.

The Celebrity Skifest kicks off on today (Dec. 2) and ends Monday (Dec. 5). For more information, visit