IDA+S
Behind every IDA+S piece is the story of a woman who built something lasting through perseverance, resilience, and a deep respect for craft. That woman is Ida Siu. For Ida, fashion was never about appearances. It was about honoring the work it takes to build a life, raise a family, and create something meaningful with intention and care.
That legacy lives on in every seam at IDA+S. Our women’s designer clothing is created for modern life, for women who move with purpose and value pieces that feel as good to wear as they do to own. From softly tailored jackets and fluid silk dresses to relaxed pants, elevated knits, and thoughtfully cut blouses, each garment is designed to become part of your everyday rhythm. We believe in choosing fewer, better pieces that bring lasting value to your wardrobe.
At IDA+S, style begins with substance. Our collections span dresses, tailored pants and suits, everyday tops, refined blouses and shirts, modern jackets, cozy sweaters and knits, and timeless coats, all designed to work together as a considered wardrobe system. Whether you’re building a polished work look or curating relaxed essentials for weekends and travel, our pieces are made to layer effortlessly and evolve with you.
Craftsmanship sits at the heart of everything we do. Each garment is created using premium materials chosen for their beauty, comfort, and longevity, including cashmere, merino wool, cotton, silk, linen, leather and suede, premium knits, and textured fabrics such as tweed. As a brand born from a family-owned factory, we maintain complete ownership of our production process, allowing us to uphold exacting quality standards while supporting the skilled artisans behind every piece. Sustainability is not an afterthought. It’s embedded in how we design, source, and create, from thoughtful pattern cutting to responsible materials and long-term wearability.
Our approach to women’s fashion is grounded in real life. IDA+S clothing is designed to move seamlessly from weekday commitments to weekend moments, offering versatile silhouettes that adapt to your lifestyle. Pair tailored trousers with a crisp shirt for work, layer a soft knit under a structured blazer, or style a flowing dress with relaxed outerwear for everyday ease. Each collection is united by a timeless palette of neutrals and seasonal tones, making it simple to build outfits that feel cohesive, natural, and personal across your entire women’s clothing wardrobe.
We know that finding the right size can make all the difference. That’s why every IDA+S style includes a detailed sizing guide with precise measurements for bust, waist, hips, and garment length. Our guides are designed to help you choose with confidence, whether you prefer a tailored silhouette or a more relaxed drape.
IDA+S is built on a belief that clothing should support the way you live, not dictate it. Founded by Kinsen Siu and inspired by his mother Ida’s journey from New York’s garment industry to building a vertically integrated factory, the brand brings together heritage craftsmanship with a modern, mindful approach to design. From the people who make our clothes to the women who wear them, every part of IDA+S reflects a commitment to quality, longevity, and purpose.
Explore our women’s designer clothing and discover pieces created to honor craftsmanship, elevate everyday style, and become lasting companions in your wardrobe.
