14 October 2026International edition
Vol. I · No.
14 October 2026
AI in Fashion
DAILY
The daily briefing on AI in the fashion business
Where fashion meets artificial intelligence.
Premium and contemporary

Our Sister

Belgium

Our Sister is a Belgian womenswear brand founded by brothers Michiel and Dries Somers, with collections since 2018. It designs women's clothing with fresh colours and clean lines and is the counterpart to the menswear label Castart.

Facts
FoundersMichiel and Dries Somers
Collections since2018
CountryBelgium
Sister brandCastart (menswear)
Websiteoursister.com
Segment
Mid-market
Categories
Womenswear
Sales channels
E-commerceWholesale

What is Our Sister?

Our Sister is a Belgian women's fashion label created by brothers Michiel and Dries Somers. It is the womenswear counterpart of Castart, the menswear brand from the same founders, and has released collections since 2018.

Products and positioning

Our Sister designs women's clothing built on fresh colours and clean lines. The founders put attention on sustainability and ethics in the way the collections are developed, aiming for wearable pieces with a contemporary, uncomplicated look. Together with Castart, the brand offers a coordinated women's and men's proposition from one Belgian design team.

Why it matters

Our Sister is one of the Belgian contemporary labels highlighted among the country's notable fashion brands. Building a women's line next to an established menswear label is a way for small independent companies to share design, sourcing and retail relationships across two customer groups, and to present a single family of brands to multi-brand stockists.

Frequently asked questions

Who founded Our Sister?

Our Sister was founded by Belgian brothers Michiel and Dries Somers, who also run the menswear label Castart.

Where is Our Sister from?

Our Sister is a Belgian womenswear brand.

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