Location

Los Angeles, USA

Founded

2020

Price range

$99 – $1,840

Shipping

Worldwide

Catalogue

253 products

Size range

S–L

New arrivals

17 this month

The Sei

Independent brand — verified
About

THE SEI is an American luxury designer clothing label for women, founded in Los Angeles in 2020 by a team of four women who met while designing together at Michelle Mason. When the pandemic left them at a crossroads, they chose to stay together and build their own fully women- and minority-owned brand, with each founder bringing a different role. Their aim is a foundation of polished classics mixed with seductive silhouettes, designed by women for women of all generations and lifestyles. The collection includes gowns, dresses, tops, trousers, skirts, blazers, jackets, silk sets and knitwear. The designs play the masculine restraint of structured tailoring against the feminine sensuality of draped, body-skimming styles, and pieces are made in China. The label works with materials such as silk, merino wool, cashmere and viscose, aiming for pieces that feel effortless and timeless rather than seasonal. THE SEI is sold by major retailers including Saks Fifth Avenue, FWRD, Revolve, Mytheresa, Ounass and Harvey Nichols Doha, as well as specialty boutiques across the US and abroad. Kristen Bell wore a THE SEI halter top to a screening of Nobody Wants This.

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Brand Details

China
Polyester
Elastane
Polyamide
Silk
Merino Wool
Cashmere
Viscose
Last reviewed
Oct 2026
Independent brand
Verified

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Frequently asked questions

What is THE SEI known for?
THE SEI is a Los Angeles luxury womenswear label known for polished tailoring, draped silhouettes and sophisticated eveningwear that balances structured and feminine design.
What does THE SEI sell?
THE SEI sells gowns, dresses, tops, trousers, skirts, blazers, jackets and other luxury women’s ready-to-wear.
When and where was THE SEI founded?
THE SEI was founded in 2020 in Los Angeles, California.
Who owns THE SEI?
THE SEI is fully women- and minority-owned and was created by a team of four women who previously worked together in fashion design.
Where is THE SEI clothing made?
THE SEI clothing is made in China, while the label is based and designed in Los Angeles.
How much does THE SEI clothing cost?
THE SEI falls in the luxury price range. Tops commonly cost around $470–$670 USD, trousers around $600–$750, dresses and gowns around $860–$1,450 and leather outerwear can exceed $1,500.
What style of clothing does THE SEI make?
THE SEI combines structured tailoring with softer draping and body-skimming silhouettes. Its collections include polished blazers and trousers alongside corset tops, silk pieces, evening dresses and gowns.

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