Gigi Hadid walking in New York City in a favorite pair of "mom jeans" reminiscent of the types of jeans that were popular in the '90s - June 28, 2017 Gigi Hadid walking in New York City in a favorite pair of "mom jeans" reminiscent of the types of jeans that were popular in the '90s - June 28, 2017

Mom jeans actually have changed quite a bit since they first broke onto the scene.

Top models like Gigi Hadid and Kendall Jenner are still setting the rules when it comes to wearing this tricky trend like a star. According to these It Girls, artsy rips and tears, along with cropped hems, are the way to go.

Also, the more you can play up the ’90s nostalgia, the better. On one occasion, Gigi rocked a retro construction worker vibe with a little help from a white tank, work boots, and yellow tinted glasses. If you don’t think that took guts, think again. Yet she makes it look effortless.

On the streets and sidewalks, fashion pros are embracing the new evolution of Mom Jeans. Linda Tol is a big fan, having worn the look on more than one occasion.

Despite new innovations, there are a few defining factors that differentiate mom jeans from other forms of denim. It’s all about the ’90s wash, the loose fit in the waist, the stiff fabric, and the straight leg cut. Bonus points for cuffed hems!

Mom jeans fall under the broader umbrella of What-Once-Was-Nerdy-Now-Is-Cool, which is all the rage right now. In this sense, it joins trends like fanny packs, crocs, and amphibious sock boots. Carrying off any of these “ugly-chic” items is basically like an induction to the Fashion Hall of Fame. These fashionistas all qualify.

Did we mention Mother’s Day is coming up on May 13? Why, how fitting! — jas