AceShowbiz -

Leonardo DiCaprio lent his star power for the good cause. The Oscar-winning actor threw a star-studded fundraiser at St. Tropez to support environmental awareness and research for climate change. The event was a big success, raising a whopping $45 million.

The A-list attendees included Bono, Chris Rock, Mariah Carey, Tobey Maguire, Jonah Hill, Naomi Campbell, Bradley Cooper and Edward Norton. Prince Albert of Monaco was feted with New World Leadership Award while Lana Del Rey, The Weeknd and Andrea Bocelli performed at the gala.

The guests had opportunity to bid for a week on set with Martin Scorsese, a private game of Texas Hold 'Em with Norton and Hill, an evening with Carey, a lunch with Margot Robbie as well as a Harley Davidson motorcycle and the "Terminator: Genisys" skull from Arnold Schwarzenegger.

Meanwhile, "The Revenant" actor auctioned his Rolex, the diamond cufflinks he wore when he won his Academy Award earlier this year and a seven-night stay at his property in Palm Springs. A portion of the proceeds will benefit victims and survivors of the recent Nice attacks and the rest will go to the actor's foundation dedicated for environmental efforts.