A new look is set to unveil for American Airline employees. After nearly three decades, the world's biggest airline finally decided to make new uniforms for its frontline workers.

The switch involves more than 70,000 workers, including the company's pilots, flight attendants, customer service agents and airline club workers. The said uniforms sport a "slate gray, cobalt and crisp white" color scheme, giving its customer-facing employees a much modern and new look.

As the airline desires for fresh new look to be a hit to both workers and customers, it also wants to imply the important decision they have made which shows a sign of progress in their part.

"It really shows us as one brand. And that was really the only thing that was still kind of lagging behind for customers - being able to see that come together, it's a huge milestone for us," Brady Byrnes, American's Director of Global Marketing, told USA Today.

In 2013, the company revealed a new paint scheme and logo, and has since been updating everything from its website to its airplanes with the new look.

American's VP of Global Marketing, Fernand Fernandez, said, "We've been investing quite heavily on everything from re-branding all of our airports to painting aircraft. This completes a lot of customer-facing elements."

Getting the new look and feel of the uniform into the modern era, American shares it worked closely with its employees to get their feedback and come up with a design.

"This has really been 100% employee-driven," Byrnes says.

Besides the main uniform, manufactured by Twin Hill, American is also currently advertising for a line of accessories produced in an exclusive partnership with Cole Haan.

Fernandez says that working with Cole Haan, "a great American brand, has further elevated the uniform," with custom-designed handbags and other components that offer American some design flexibility.

"We're already starting to rethink what's next," he adds.