The way a person dresses, the way they decorate? Well, according to Psychology Today, it goes a lot deeper than that.
Experts say style is this: One part self-knowledge and one part self-confidence. In other words - it's your attitude. Showing the world who you are, both on the outside and in spirit. And it should never be confused with fashion - the clothes you wear. Fashion is in the clothes. Style is in the wearer. Here are some more facts about style, according to Psychology Today.

Style rejects ideals. It goes it's own way.
Style is democratic. It's about each person creating their own unique identity in how they carry themselves, how they groom and what they put on.
Style is aristocratic. It's sets you apart from the masses and tells the world that you've got complete control of yourself.
Style is intelligent, because you have to really know who you are to pull it off.
And finally, style is optimistic. It shows others that you're a person of interest and that life is worth making the effort forBut you can't have style without taking risks. Exploring all sides of your personality and throwing out what doesn't work. It's like therapy you don't have to spend $100 bucks an hour for - so dig in.
And know this - the next time someone tells you that you have a great sense of style they're giving you a HUGE compliment. So say the experts.