Anyone can give advice on fashion. However, for some matters, it’s best to leave opinion to the experts. After all, they’re the ones who managed to make a living out of this zany industry we call fashion, managing to endure day in and day out the trials and tribulations of one of the craziest businesses in the world. But it’s those experts who know fashion the best. So when it comes to tips and words of wisdom, it’s pretty much best to just listen to them.

From his geeky days to his new rock-hard yoga body, designer Marc Jacobs has been in charge of huge fashion houses and his own line. Famous quote: “I’d like to believe that the women who wear my clothes are not dressing for other people, that they’re wearing what they like and what suits them. It’s not a status thing.”

One of fashion’s heavyweights, Christian Dior is always creating a collection that has jaws dropping regardless the year or season. Famous quote: “Zest is the secret of all beauty. There is no beauty that is attractive without zest.”

Part model, part musician, part actress, Grace Jones was one of the seminal figures of the 1970s downtown New York scene. Her influence in the modeling world is still felt, and she was one of the few performers who did a truly decadent job of dressing herself: “Models are there to look like mannequins, not like real people. Art and illusion are supposed to be fantasy.”

Proving that one’s not born a woman but rather, becomes one, RuPaul has been setting the bar for her own unique brand of fashion since the 1990s. Still kicking, her incredibly witty insight on the world at large is worth repeating, and her search for the next best drag queen netted tons of viewers recently. One notable quote of hers: “With hair, heels, and attitude, honey, I am through the roof.”

Once a fixture of the explosive after-hours seen in 1980s London, Simon Foxton still lives and works as a stylist today. He was one of the first stylists of the 1980s to make it from the club flyers to the glossy magazines of Milan and New York. Famous quote: “For the last three or four decades it has been the streets [setting trends], and maybe now it’s gone back to the designers again and they’re the ones who are coming up with the goods and setting the trends.”

Fashion designer Jeremy Scott is known for his hilarious and fabulous fashion shows in Paris. Since relocating to Los Angeles, he’s managed to grab the attention of major States-side celebrities. Famous quote: “I’ve never met someone that I thought, oh my god what the — is she doing with my clothes? It’s always cute kids and that’s the most flattering. It’s people I would like to know or would like to talk to, people who have similar interests too. That’s the whole thing about fashion: it’s not only about the clothes but also about the people.”

A man who knows what it’s like to turn a name into a brand, Ralph Lauren set the bar for accessible yet proper fashion and what it means to create a lifestyle instead of just a garment. Famous quote: “I’d like to believe that the women who wear my clothes are not dressing for other people, that they’re wearing what they like and what suits them. It’s not a status thing.