MIAMI — High fashion is going granola. But not the grunge of hippie yoga wear and grainy hemp T-shirts typically associated with organic clothes.

Think soft soy dresses, cropped organic terry jackets and slim-fit organic denim jeans to pair with stilettos, not flip-flops.

Consumers worried about ingesting harmful pesticides have long been purchasing organic foods. But the philosophy is slowly hitting mainstream clothing retailers as experts warn about the dangers that pesticides pose to the environment.

Whether shoppers are buying eco-friendly because it's trendy or because they hope to preserve Mother Earth, they are not having to sacrifice fashion for philosophy. With major retailers like Target, Victoria's Secret, H&M and Nike joining the green trend, there's something for fashionistas of every price range in 2007.

"We're fashion first. The fact that they're organic is a value-added product," says Marci Zaroff, founder of Under the Canopy, one of the world's largest producers of organic clothing.

Organic cotton, which makes up 95 percent of organic fabrics, is the driving force behind the trend. Global organic cotton sales increased 119 percent, from $245 million to $583 million between 2001 and 2005. Sales are expected to reach more than $2 billion by the end of 2008, according to the Organic Exchange, a nonprofit trade association that works to expand the use of organically grown cotton.

Though more retailers are considering organic cotton, it currently makes up less than 1 percent of cotton produced in the world. Designers are also experimenting with eco-friendly fabrics made of bamboo, soy, Ingeo (corn) and hempsilk.

"The market is really expanding in large because a number of very large retailers are actually going to have a lot of product available in 2007," said Rebecca Calahan Klein, president of California-based Organic Exchange.

Target, which carries a select number of organic baby clothes, is expanding its line this year. (Sam's Club and Wal-Mart are among the top five brands that use the most organic cotton globally, according to Organic Exchange.)

Victoria's Secret will also add organic cotton to its collection this year, Klein said.

Nike is one of the world's largest retail users of organic cotton. Spokeswoman Morgan Shaw says 52 percent of the garments the company manufactured last year contained at least some organic material.

Costs are slightly higher, but comparable. A men's organic cotton T-shirt at Wal-Mart is $9.83, while a similar regular cotton T-shirt sells for $8.83. Levi Strauss & Co. started offering organic denim jeans in some stores in November — $68 for its Red Tab jean compared to $40 for non-organic.

The look and feel of the clothes are so fashion-forward that many clients don't even realize they're buying organic. They just like the style, says Zaroff, a perfect spokeswoman for greenwear.

A yoga devotee with long blonde hair and lots of hippie jewelry, Zaroff looks years younger than 39. She talks about Al Gore's movie on global warming and environmental issues at her Boca Raton office, where she is working on a new fashion line debuting later this year.

The 108 line of upscale street wear includes dresses in muted tones made of soft soy and organic cotton voile.

She founded her company in 1996, when organic wear was little more than a hemp seed. She says it will do $10 million in sales this year.

"It was frumpy and boxy and crunchy and all those things people don't want," Zaroff said of older organic clothing. "The consumer was ready. The seed was planted with organic food and beauty products."