What a difference two years makes in fashion.

J.Crew’s legendary Chairman and CEO Mickey Drexler this month announced his first activewear line in partnership with New Balance.

The Post’s Josh Kosman reported exclusively that Drexler is losing some of his sway in the private equity-owned retailer, and recently hired consultancy McKinsey & Co. for advice on improving the preppy brand.

Two years ago, Drexler was not about following trends.

The retail legend said in an October 2014 interview that he considered and dismissed making yoga clothing.

“We thought about being in the active, professional kind of business, but we’re not getting in because we don’t have the expertise to do that,” he said.

Now that J.Crew missed the activewear tsunami, the company is only breaking about even on a cash-flow basis and has more than $2 billion in debt.