What it is: A high-end fashion brand that, since namesake designer Yves Saint Laurent died in 2008, has dropped the first part of the brand name.
Why it's hot: The company underwent a massive rebranding after Hedi Slimane was made creative director in 2012.
Why it's hot: When it comes to retail, fast fashion rules.
What it is: The luxury brand sells designer bags that stylish women love.
Why it's hot: It's a hot designer for famous folks; celebrities from Kylie Jenner to Janet Jackson have been seen wearing one of the designer's bags.
It's known for its founder Sophia Amoruso, who wrote the manifesto "#GIRLBOSS." Why it's hot: Women love the confident attitude that the clothes — and Amoruso — demonstrate.
Amoruso's success story is inspiring to many young women.
Stylish millennials and Gen Z-ers are the future of retail.
Goldman Sachs and Teen Vogue picked out young women ages 13-29 that they defined as fashion forward, and polled these select girls to find out which brands they love the most.
"Before the re-launch we had a very small footwear business.
Now Saint Laurent is one of our top ten [brands] at Barneys," said Daniella Vitale, chief operating officer and senior executive vice president of Barneys New York said to Fashionista earlier this year What it is: An online retailer that caters to young women with its unique and edgy designs.
The brand also has quirky names for its polish colors, like "A Good Man-Darin Is Hard to Find" and "Aphrodite's Pink Nightie." What it is: Swarovski sells crystal jewelry, with prices that have a wide range.
The most expensive necklace on the company's website is ,600, and the least expensive is .
Why it's hot: The Birkin bag is a status symbol, and was canonized in the Upper East Side mom tell-all "Primates of Park Avenue." What it is: OPI is one of the most popular nail polish manufacturers.