The Top 10 Moments in Activewear in 2014

According to the NPD Group, men's and women's activewear has grown to a $28.7 billion business in the U.S., up nearly 9 percent in the last 12 months, and at double the rate of non-active apparel. Driving that growth is consumers' increasing demand for multifunctional workout apparel that can be worn inside the gym and beyond, and as a result, everyone, from Beyoncé to Betsey Johnson, wants a piece of the pie.

The last 12 months saw an onslaught of new yoga, athleisure and activewear lines enter the space, and in particular, brands such as Nike...