Through the many eras and styles of the last century and a half, there has been one constant: the Levi's 501.

Straight leg, button fly — the Levi's 501 is the iconic blue jean embraced by everyone from factory workers, to movie stars, to rockstars, to computer programmers, to presidents, to some of the most prominent voices in the movement space.

Today, Levi's is celebrating 501 Day, the 148th birthday of the original blue jean. For Levi's 501 Day 2021, Levi's is shining the spotlight on a new generation of Levi's Originals.

They are seven original voices who know how to effortlessly blend style, creativity, authenticity and purpose.

The list includes Japanese tennis player Naomi Osaka.

Model Hailey Bieber

YouTuber Emma Chamberlain

Actress Barbie Ferreira

Actor and rapper Jaden Smith

Footballer Marcus Rashford

Basketball player Shai Gilgeous-Alexander

The 501 has long been the go-to for cool kids. Much of that comes down to the 501’s classic simplicity. Dressed up or dressed down, worn fitted or oversized, dark or faded, straightforward or customized, it’s the heart and soul of Levi's and modern fashion.

Any jean today is an iteration of this original. With the Levi's 501, no two pairs are the same, and that makes it a true original.

“The 501 is the original blue jean so it made sense to celebrate our icon with this cast of ORIGINALS. We are inspired by the emotional connection they each have with the 501--their personal styles & stories make the jean so uniquely their own,” said Karen Riley-Grant, Levi’s Chief Marketing Officer

Of course, the story of the Levi's 501 is not just about enduring style. It’s also about sustainability. It’s a throwback to the days when things were built to last.

Thanks to Levi's Tailor Shop, 501 jeans can be repaired, giving them an even longer lifespan. With Levi's Water<Less, the modern 501 is finished using up to 96% less water than in typical denim finishing, making them a much more sustainable denim option.

There will be a full day of programming today featuring Levi's Originals talent. There will be Coffee Talk with Emma Chamberlain, Hailey Bieber and Barbie Ferreira on YouTube Live, Naomi Osaka and Marcus Rashford gaming on Twitch, YouTube Live performances from the Levi's Haus featuring Kehlani, Eric Nam, Joyce Wrice,mband Duckwrth and a conversation covering everything from personal style to the history of the 501 on Clubhouse’s Culture Club featuring 501 Originals with a very special guest host.

Levi's is having a 501 Day Denim Sale where consumers can get Php501 off until May 23.

For more information, follow @levis_ph on Instagram and @levis.philippines on Facebook.