Collection: THE SEI
The Sei is a Los Angeles based luxury ready to wear brand founded in 2020 and proudly women and minority owned. Created by a team of four designers who previously worked together at Michelle Mason, The Sei was born during a pivotal moment and transformed uncertainty into a refined vision for modern womenswear.
Built on collaboration and creative diversity, The Sei designs thoughtful pieces made for women by women. Each collection reflects a balance of structure and fluidity, pairing polished classics with sculptural silhouettes that feel powerful yet effortless.
Known for clean tailoring, draped dresses, elevated knitwear, and modern statement pieces, The Sei blends masculine restraint with feminine sensuality. The result is contemporary luxury designed to inspire confidence, versatility, and timeless sophistication across generations.
At RTND, we curate The Sei for women drawn to directional silhouettes and refined minimalism. These are pieces that feel intentional, elevated, and distinctly modern.
#HereToSei
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The Sei Structured Trench Coat in Black
Regular price $2,495.00 CADRegular priceUnit price per -
The Sei Flutter Top in Smog
Regular price $840.00 CADRegular priceUnit price per -
The Sei Cinch Blazer in Pinstripe
Regular price $1,275.00 CADRegular priceUnit price per -
The Sei Boyfriend Trouser in Pinstripe
Regular price $785.00 CADRegular priceUnit price per -
The Sei Wrap Bustier in Pinstripe
Regular price $798.00 CADRegular priceUnit price per -
The Sei Open Shoulder Sweater in Cocoa
Regular price $695.00 CADRegular priceUnit price per -
The Sei Oversized Silk Blazer in Thyme
Regular price $1,785.00 CADRegular priceUnit price per -
The Sei Relaxed Silk Trouser in Thyme
Regular price $990.00 CADRegular priceUnit price per -
The Sei Curve Blazer in Pinstripe
Regular price $1,276.00 CADRegular priceUnit price per$1,595.00 CADSale price $1,276.00 CADSale -
The Sei Relaxed Trouser in Olive
Regular price $990.00 CADRegular priceUnit price per -
The Sei Double Breasted Blazer in Olive
Regular price $1,875.00 CADRegular priceUnit price per -
The Sei Henna Lambskin Back Flap Leather Bomber Jacket
Regular price $2,875.00 CADRegular priceUnit price per -
The Sei Sand Lambskin Fitted Leather Jacket
Regular price $2,500.00 CADRegular priceUnit price per -
The Sei Sand Lambskin Leather Mini Skirt With Belt Loops
Regular price $1,400.00 CADRegular priceUnit price per -
The Sei Sand Lambskin Back Flap Leather Bomber Jacket
Regular price $2,875.00 CADRegular priceUnit price per -
The Sei Olive Suede Leather Mini Skirt with Belt Loops
Regular price $1,500.00 CADRegular priceUnit price per
