The queen of the no-pants trend, Haley Bieber, has invented a whole new way to wear track shorts. On a casual girls' night out, the Rohde founder unveiled a remix of her go-to jacket trend, while also elevating the sporty staple. (The 27-year-old model wore an oversized leather bomber jacket by Balenciaga to hang out with Kylie Jenner in Los Angeles on April 8. Her white T-shirt peeked out a bit underneath.

Loose-fitting coats are not surprising in Bieber's wardrobe, but the bottoms she wore with them were. She paired a tough moto jacket with blue running shorts for an athletic look. Unlike the outerwear straight off the runway, her track star bottoms have yet to be ID'd.

Otherwise, Bieber enlisted her go-to accessories for a casual 'fit,' in the form of slouchy white socks and Dr. Martens oxford lace-ups. She also opted for a miniature Caroline bag from Freja, along with small black sunglasses and chunky gold earrings. 7]

Bieber's late-night dewy glamour was evident in her rosy pink cheeks and glossy berry lips-perhaps all her beauty line, Lorde of Rohde - was featured. (A carrying case of Rohde's lip gloss was not pictured, but was probably stashed in her bag.)

The lip gloss was also featured in the photo.

Kylie Jenner followed right behind Bieber in an all-black look. Her outfit consisted of an oversized black sweater, matching pants and pointed boots.

Bieber's recent sightings join a long list of celebrities like Bella Hadid and Rihanna who have added a high-fashion twist to baseball caps, running shorts, and retro soccer shoes, demonstrating once again her affinity for all things sporty and chic!

Monday's casual look is also the latest in a marathon of barely-there outfits covered by oversized moto jackets. Bieber owns several leather bombers from brands such as Khaite, Acne Studios, and Loewe that are perfect for spring layering.

Another trend this model can't usually resist is Itty Bitty mini shorts instead of real pants. Over the past year, Bieber has tried on the teeny tiny bottoms for a variety of occasions, from errands to his weekly church date with Justin Bieber. Last month, he showed up wearing Simone Rocha's Victorian bloomers.

With spring in full swing, Haley Bieber is already getting ready to show off her best street style for the warmer weather.