No matter how much people snark about big-time celebrities, running off in their big Gulfstreams to “raise awareness” of environmental causes, some of them do actually stick with the cause. Such is the curious case of Leonardo DiCaprio. He’s been an environmental activist/advocate for a dozen years, and he’s consistently put his money where his mouth is. He’s been mocked and scorned, and he’s stuck with it. Props to Leo!

To celebrate this year’s Earth Day (or Earth Week, if your world swings that way), Leo is auctioning off a bunch of stuff to benefit Global Green USA. I just looked at the website, and it seems like a really good, well-organized group. They work on the individual, local, state, national and international levels, tracking sustainable environmental technology, water issues, rebuilding New Orleans, and encouraging green spaces and designs in public spaces and cities. The site also has some really cute pictures of Jake Gyllenhaal and Neal Patrick Harris (two swoons).

Some celebrities need to sell off their stuff to fans to make a profit, but if you’re as famous and successful as Leonardo DiCaprio, you can afford to give things away for a good cause.

Always an environmentalist, Leo is auctioning off some major items to benefit Global Green USA, a cause aiming to build a more sustainable future for the world and positively affect climate change.

Starting at 7 p.m. PST tonight through Earth Day, April 22, fans can bid on items such as a personal meet and greet with Leo for a fan and up to three guests at the red carpet premiere of his upcoming film, Shutter Island; autographed costume pieces from Catch Me If You Can; signed memorabilia from Titanic and personalized headshots for the ultimate Leo fan.

[From OK! Magazine]

Oh, Titanic memorabilia! I bet that stuff goes for a lot of money, but the biggest price tag will probably be for the Shutter Island tickets. Go to the eBay auction if you’d like to hang out with Leo!

Shutter Island comes out later this year, and it sounds really good. Leo reteamed with Martin Scorsese, and the excellent cast includes Michelle Williams, Mark Ruffalo, Ben Kingsley and Jackie Earle Haley. It’s set in the 1950s, too, so we can look forward to awesome costumes.

Here’s Leonardo at the Armani store opening on 5th Avenue in New York City on February 17th. Images thanks to WENN.com .