It’s time for the September edition of E.S. Eco-Over! If you’re new to this feature, we take a runway trend and find a stylish equivalent from a green designer — usually for a lot less than the high-end version.

Up this time is Jean Paul Gaultier’s sailor pants (pictured left). With a flat front and long, wide legs, these cotton-linen blend jeans are born for fall (think wedges and a snug-fitting striped top — very French).

But for eco-conscious fashionistas, Kelly B has a doppelganger in denim made from bamboo and hemp with a touch of silk for softness. All the style with far more sustainable fabrics — you’ll wear these into the ground.

Jean Paul Gaultier Sailor Pants, $795 at NeimanMarcus.com, versus Kelly B “Sabrina” Sailor Pants, $48 at Nimli.com.