The 23 Trendsetters Who Decide What's Cool In America

Job title: CEO, Nasty Gal

Business at Amoruso's trendy e-commerce site has been booming, partly thanks to Amoruso's impeccable style. Through her new book, #GIRLBOSS, Amoruso has become an inspiration to edgy women everywhere.

Job title: Editor-at-large of Harper's Bazaar and fashion writer

Blasberg is a Renaissance man for the modern age. His website MrBlasberg.com features fashion and social commentary, best-dressed lists, and documents his extensive world travels. His social circle includes actress Emma Watson and model Karlie Kloss.

Job title: Interior designer and lifestyle blogger at Eye Swoon

Harper's Bazaar named Calderone one of the chicest women of the year, calling her "a Martha Stewart for the fashion blogger age." Her readers at the highly popular blog Eye Swoon are also fans of her impeccable style in clothing and decor.

Job title: Editor, Lucky Magazine

As editor of Lucky, Chen has a more approachable style than her boss at Conde Nast, Vogue editor-in-chief Anna Wintour. She imparts fashion advice several times a day on Twitter.

Job title: Buyer, Bergdorf Goodman

Fargo is the "luxury department store's chief trend spotter, ambiance master and gatekeeper of style," according to Time. The designs that Fargo selects often end up being emulated at other department and specialty stores.

Job title: New York Times fashion director and chief fashion critic

Friedman's opinion on runway shows is the one that matters most. As the new style critic at The New York Times, her influence on major fashion designers dictates trends that end up in national retail stores.

Job title: Fashion blogger, actress, singer, and editor of RookieMag.com

By the time she was 12, Gevinson was a popular fashion blogger who frequented runway shows. The 18-year-old continues to be a style influence through her online magazine Rookie. In addition to fashion and beauty, the site discusses feminism and women's issues.

Job title: Blogger at Bryanboy

Grey-Yambao hails from the Philippines and is widely considered to be one of the most prominent celebrities online. His blog, Bryanboy, features witty fashion commentary that has earned him a cult following. Grey-Yambao is often seen at fashion shows, sometimes sitting front row alongside Vogue editor-in-chief Anna Wintour.

Job title: Model

Miranda Kerr is the modern supermodel. While she cut ties with Victoria's Secret last year, Kerr has scored fashion campaigns with H&M, Wonderbra, and Reebok. Kerr has an Instagram following of 4.2 million people.

Job title: Model and designer

Karlie Kloss is one of the most prominent models in the world right now, thanks to her Victoria's Secret Angel fame. Her bob haircut has also been widely copied. Kloss is also trying her hand at designing: She just launched a sunglasses line with Warby Parker.

Job title: Investor, FirstMark Capital

Lenihan's investments are changing the way we buy things online. His investments include ahalife.com, a curated luxury retail platform, and Tommy John, which is reinventing men's underwear. His investments are on the forefront of the e-commerce industry.

Job title: Director of design partnerships, Target

Target has brought some of the most coveted designer brands to the masses through partnerships with Missoni and Phillip Lim. Morales has the ultimate say in which designer collaborations Target will release next. Her Instagram is a great outlet for her style.

Job title: CEO, Urban Outfitters

As CEO of Urban Outfitters Group, Hayne controls what the namesake, Free People, and Anthropologie brands sell. Hayne recently hired a new design team and has said that the brand's look could change entirely this year.

Job title: YouTube superstar and fashion videoblogger

YouTube fashion star Bethany Mota, 18, is beloved by millions of female fans. Home-schooled and bullied online, Mota started her channel from her North Carolina bedroom as a way to make friends with fashion-minded women. Today she rakes in $40,000 a month from her YouTube channel and has a fashion line at Aeropostale.

Job title: Fashion designers

These beloved child actresses are now major style icons. Their couture label, The Row, has widespread critical acclaim. The twins opened the brand's first store this year. The designers also have a teen line at JCPenney called Olsenboye.

Job title: CEO, Zara

Fast-fashion giant Zara is often the first chain to offer runway styles to mass market. Because Ortega tightly controls his distribution line, the company can offer cutting-edge fashion much more quickly than competitors.

Job title: Chief product officer, Lululemon

Everyone from Urban Outfitters to Nordstrom is trying to replicate Lululemon's gym chic. As the company grows in popularity and influence, Poseley's role overseeing product makes her a big influencer. The company has started branching into regular casualwear with its &Go line.

Job title: Fashion investor and cofounder of Theory

As an investor in fashion companies, Rosen helps decide which fashion brands are expanded to the masses. His most recent success is popular megabrand Alice + Olivia.

Job title: Founder of the Sartorialist and fashion photographer

Schuman is widely credited as the modern inventor of street-style photography. His relatable style tips and awesome photography have made waves in the fashion world. He's done advertising campaigns for DKNY Jeans and Gap.

Job title: Designer

For years, Diane von Furstenberg has been famous for her fabulous dresses. But now the designer is charged with making Google Glass look more appealing to the masses. Her designs could influence the wearable gadget for years to come.

Job title: Kanye West: musician, entrepreneur, designer. Kim Kardashian West: reality-TV star, businesswoman, fashion designer

This year, Vogue called the Wests the most talked-about couple in the world. The pair famously appeared on the cover of the magazine. Both stars are revered for their style. Fashion designers have said that Kim Kardashian is more of a sales driver than Kate Middleton.

Job title: Hairstylist

Guido Palau is responsible for creating many runway hairstyles of the past decade. His looks for Ralph Lauren, Alexander McQueen, and many others have become national trends. He does consulting for Redken.

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