Only Justin Bieber could inspire a national holiday with his shoe style.

In the pop star’s honor, Hotels.com has dedicated his birthday (March 1) as National Hotel Slipper Day.

The inexpensive slippers are as much a staple of the “One Less Lonely Girl” singer’s wardrobe as his sneakers — even though he has a closet filled with buzzy styles from brands like Nike, Vans and Off-White. While the soft-soled shoes are typically worn only within hotel rooms, the Biebs has a penchant for wearing them out and about.

The 24-year-old released his own take on the style for the holiday season, selling $5 Cheap Hotel Slippers emblazoned with smiley faces on the website for his clothing brand, House of Drew. The slippers are now sold out on Houseofdrew.com, along with the rest of the former teen heartthrob’s offerings.

He’s also worn a more luxe take on the comfy shoes, stepping out in New York with wife Hailey Baldwin this month while clad in monogrammed mink Louis Vuitton slipper that retail for $1,500.

It’s fitting, then, that Hotels.com would select the star’s birthday as National Hotel Slipper Day. The booking site got the date certified by National Day Archives LLC — meaning its now officially on the books.

The site is giving consumers booking a hotel room today $25 off their stays of $250 or more by using the code word slippers.

Click through the gallery to see more of Justin Bieber’s couple’s style with Hailey Baldwin.

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