Julia Stiles is done with all of the Gwyneth Paltrows, the Bonos, the Katie Holmeses and the Leonardo DiCaprios of the world. So she’s mocking them and their eco-efforts in a hilarious new website, video, and faux-fashion line of eco-friendly clothes. Julia has launched her parody site “Julia Stiles Styles” (video above) with the tagline: “Helping the environment. You’re welcome.” Her fashion line includes the pieces she’s named “Save the Last Shants” (“Ever been wearing a shirt and thought ‘I sure wish I could also wear these as pants.’ Now you can with this trendy one-piece that can cover either your top or bottoms halves. Save time and money, for when your shirt is dirty you can wear it as pants! $470”) and “10 Shirts I love about you” (“How much do I love this shirt? Let me count the ways. Comprised from the fabrics of 10 other vintage shirts, this piece is sure to make passersby say “wow.” Perfect for pool parties, dance parties, or any kind of party. Be the envy of all those around you whose shirts come from only one source. $340”). Gatecrasher has more:

Julia Stiles has been re-”Bourne” as a comedian. In an inspired turn, the sometime-sourpuss has taken to online video to poke fun at greener-than-thou celebs trying to force-feed us vegan-wear.

In the now-viral parody at juliastilesstyles.com, the Columbia graduate faux-hawks a fabulously sarcastic line of ecowear. She serves up seriously funny whoop-ass to know-it-all stars and the earnest celebrity causes they expect us to wear on their backs.

Yes, Gwyneth Paltrow, Natalie Portman and Alicia Silverstone – that could mean you. You too, Bono. Aw, hell, even Katie Holmes is trying to design clothes, for crying out loud.

In the vid, Stiles chats with deadpan earnestness about some ridiculous Earth-friendly fashions. They include a men’s top called “Ten Shirts I Love About You” made from 10 old shirts. A Swiffer necktie that doubles as an eyeglass cleaner is the haute hybrid accessory.

Stiles also pulls a funky fashion innovation with “shants.” That’s a shirt that becomes pants when legs are slipped into the armholes.

Stiles, who lives in New York and starts rehearsals for Broadway’s “Oleanna” in two weeks, filmed the video with the comedy group The Vacationeers. She met the four-man act while co-starring with Bill Pullman in David Mamet’s sexual-harassment drama on the West Coast. The show starts next month on the Great White Way.

“I was impressed,” says Stiles, “so we talked about making some comedy shorts.”

It’s easy to imagine the gang getting inspiration from Paltrow’s line of organic tees. Or perhaps Portman’s vegan shoes. Or maybe Silverstone’s eco-friendly eye makeup and cosmetics bags.

“We were just having a laugh, honestly,” says Stiles. And a bit of revenge, too.

“Julia’s got a good sense of humor,” says Vacationeer Jeff Grace, adding that the video was a way “to poke fun at celebrities and their causes.”

Such as? “The Bonos and Tim Robbinses,” he says. “We even like these people. They’ve done good things. But it can be cringeworthy.”

To give a silver lining to the lampoon, Stiles added a donation link on the site for the Lunchbox Fund, which feeds impoverished kids.