Jason Trotzuk, founder and creative director of Fidelity Denim, gives his tips for buying the right size and length of jeans, how to wash and dry, and what to look for in white denim.

Get comfortable with spandex
Like it or not, spandex is now a crucial component of your trusty blue jeans. With the added give, many brands can stretch up to a full size over the first 20 wears. "Size down when you buy fast-fashion [cheaper] denim, and buy true-to-fit when you're investing in a reputable denim brand—they won't bag out," says Trotzuk.

Length is everything
The most flattering length for skinny jeans is when the hem hits the top of your foot. "For average height and leg length, the sweet spot is a 29-inch inseam; it's the most flattering silhouette and length because it's fitted to the body," says Trotzuk.

When to wash and how to dry
Once the backs of the knees start to bunch and the seat gets saggy, it's cleaning time. Aim for three to five wears before machine-washing in cold or warm water. "These days, most jeans have a polyurethane or polyester-like elastin that breaks down when exposed to heat," says Trotzuk. Hanging to dry will leave you with a stiff garment, so he suggests tumbling dry on low heat.

The white way
If white jeans are on your must-try list, look for a pair that fits snug and looks simple. Steer clear of too many embellishments; clean lines will help your legs appear longer and minimize your assets.

Read more:
What shoes to wear with your jeans

This story was originally published in our April 2015 issue.

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