People in the fashion industry have a penchant for making up new words. The latest example? Athleisure. As you might assume, athleisure wear refers to clothing that could be worn for either athletic or leisure activities, and covers everything from bomber jackets to leggings to bodycon dresses. So what differentiates between those cashmere sweaters meant for the office and those meant as athlesiure wear?

an image from Lululemon's Holiday campaign (glitter color currently sold out)

an image from Lululemon's Holiday campaign (glitter color currently sold out)

The answer is really in the hands of the customer. Of course certain items, like sweatpants (yes, even if they are cashmere) and sports bras, will likely never be considered office appropriate. But that isn't stopping designers from trying. The brands embracing this new trend range from Lululemon to Chanel. It has really become a catch all for sporty items that can be worn both on the track and outside the gym.

As is the case with many trends, it's unclear why this style has become so popular but I have a few guesses. Over the past few years, hundred of healthy habits campaigns have been launched by a variety of individuals like Coca Cola, the CFDA, and Michelle Obama. Since then it has become the it thing for many to brag about their latest workout or health binge, posting images of their new squat PR to Instagram and Twitter. And what is the easiest way to broadcast your fit focused lifestyle? By wearing clothes that make it look like you're either coming from or going to the gym. It doesn't matter if you haven't actually visited the gym in a few months, you can still give the impression that you're not only just as healthy minded as Karlie Kloss and Joan Smalls, but just as fashionable too.

Check out some of my favorite athleisure items below or head over to Net-a-Sporter (yup, that's a thing) to see what athletic gear means to high end designers.

Teri Agins

The fashion industry is one of the most competitive in the world, and fashion journalism is no exception. Thousands of writers strive to become  one of the few with full time writing jobs or even just a recurring freelance gig at the industry's top magazines, newspapers, and online publications. With so many people vying for the same jobs, how can you make yourself stand out from the crowd? By working hard, takings risks, and studying up on Teri Agins.

Ms. Agins is one of the most successful fashion writers out there and she has no plans to slow it down. She is best known for her work as the Wall Street Journal's premiere fashion journalist, but over the past few years Agins has also put out numerous books. Her latest, titled "Hijacking the Runway: How Celebrities are Stealing the Spotlight from Fashion Designers," discusses the ever growing trend of celebrities taking on roles as fashion designers (think Beyonce for TopShop or the Kardashians for Sears). Her reach is far and wide in this industry and if you would like to follow in her footsteps, she has a few pieces of advice.

image via Fashion Week Daily

image via Fashion Week Daily

"Journalism [graduate] school isn't necessary anymore. You can just jump into this business head first. Of course you'll need internship experience - you'll need to start at the bottom. But paying for grad school? Not necessary." Ms. Agins advised Lady Gray on the ins and outs of networking, finding a job, and stay relevant. Her most important piece of advice? Work hard and always be prepared. "Anna Wintour is never late. If an event started at 8, you can bet Anna was there at 7:45 sharp."

Agins isn't afraid to speak her mind and knows the importance of writing for the masses, not just those well educated on a subject. "Fashion deserves the same level of scrutiny as the auto or the food industry. It needs to be covered with seriousness," she told

To be further inspired by Teri Agins and her impeccable writing and research skills, pick up one of her books -

Hijaking the Runway: How Celebrities are Stealing the Spotlight from Fashion Designers 
The End of Fashion: How Marketing Changed the Clothing Business Forever