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Behind every IDA+S piece is the story of a woman who built something lasting, through hardship, perseverance, and a deep respect for craft. That woman is Ida Siu, whose life shaped not just a family, but a philosophy. For Ida Siu, fashion wasn’t about appearances; it was about honouring the work it takes to build a life, raise a family, run a business, and do it all with strength and resilience.
That legacy lives on in every seam at IDA+S. From structured jackets to elegant silk dresses, IDA+S clothing is designed for women who move with intention. It’s about choosing fewer, better pieces that bring lasting purpose to your wardrobe and day-to-day life.
At IDA+S, we are deeply committed to eco-friendly practices, ensuring our garments are not only beautiful, comfortable, and versatile but also kind to the planet. This reflects our core values and empowers you to make conscious choices without compromising style. This commitment, along with our dedication to accessibility and superior craftsmanship, allows us to bring you designer-inspired luxury you can experience every day. By prioritising sustainable fabrics and ethical production, we create timeless pieces that elevate your wardrobe while honouring our responsibility to the environment.
Our pieces are designed to adapt to your lifestyle, seamlessly transitioning from work to weekend. Dress up a flowy dress with heels for a night out, or throw on sneakers and an IDA+S jacket for a chic, casual look. Every piece of IDA+S clothing is crafted from premium fabrics chosen for their comfort and longevity.
IDA+S is a brand built on a story of resilience and a vision shaped by both hardship and hope. Founded by Kinsen Siu during a pivotal time in his life, IDA+S took shape while he lived in Australia with his young family during the pandemic. Inspired by the country’s laid-back lifestyle, connection to the natural world, and growing culture of mindful living, Kinsen began to imagine a brand that would reflect those values, through design, materials, and purpose.
The name IDA+S honours his mother, Ida Siu: a woman whose journey in the fashion industry was shaped by resilience, resourcefulness, and a steadfast commitment to quality. From modest beginnings to co-founding one of New York’s largest garment factories, Ida’s influence continues to inform every part of the IDA+S philosophy: make things well, treat people with care, and always focus on what lasts.
Proudly Australian, IDA+S blends luxury craftsmanship with responsible practices, offering timeless pieces designed for real life. From refined tailoring to elevated essentials, our collections are made to support women as they move through their day—at work, with family, or anywhere life leads. With premium fabrics, thoughtful design, and a vertically integrated, LEED-certified supply chain, we’re committed to making clothes that feel as good to wear as they are to stand behind.
We understand that finding the right size in clothes can be challenging. That's why we offer detailed sizing guides with precise measurements for each IDA+S garment. Our guides include measurements for bust, waist, hips, and length, ensuring you can select the size that best fits your body shape and preference.
Explore our women's clothing collection and discover pieces that resonate with your values and enhance your personal style.
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