Women's Designer Clothing USA | IDA+S

The Miranda Cashmere Turtleneck is a timeless cold-weather staple, crafted entirely from cashmere, this pullover strikes the perfect balance between comfort and...

22 JUNE 2026

From day one, our goal has never been to build a brand that simply sells products. We’ve worked hard to create something thoughtful, inclusive, sustainable, and...

10 JUNE 2026

Impossible to ignore, the Miranda Cashmere Sweater is the touch of red that adds luxury to any outfit.

Discover online now

05 JUNE 2026

Inside the world of IDA+S.

An intimate viewing of Autumn Winter 2026 alongside the first glimpses of incoming Spring Summer 2026.

Showcasing craftsmanship an...

02 JUNE 2026

Goldie.

100% silk, soft and airy. elevated workwear.

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31 MAY 2026

#ad GRWM 🤍 Wearing new favorite pieces from ida.s___ that will take me from morning to evening!

Having high-quality, timeless pieces in my closet make getting...

29 MAY 2026

Lena Striped Button Up Top

178.00

Rosie Linen Wide Leg Pants

248.00

Friday fit ✨

Jacket: ida.s___ Pants: silklaundry Shoes: cosstores_au Earrings: mountainandmoon Sunnies: rayban

#todaysoutfit #suedejacket #fitcheck #sil...

29 MAY 2026

Nico Suede Leather Jacket

798.00

The Ida Double-Faced Wool Jacket is made from premium double-faced wool, offering superior warmth and softness without the bulk. Pairs perfectly with Serphine T...

28 MAY 2026

Ida Double-Faced Wool Jacket

598.00

SERAPHINE TWILL WOOL STRAIGHT SUIT PANTS

138.60

AD: Today’s outfit featuring this ida.s___ navy-and-white Breton stripe knit 🤍 A timeless classic that will work overtime in your autumn/winter wardrobe. Use m...

28 MAY 2026

Marlo Cashmere Stripe Knit

229.60

| A STYLIST SAYS • { style series }

Consider this your new go-to series for the styling details that change everything. The subtle tweaks, smart styling hacks...

27 MAY 2026

Vera Merino Wool Cardigan

178.00

OODT- she’s a neck scarf girl now, please send through recommendations where I can get some more from! Thx🫶 farmerbywhitney ida.s___ assemblylabel mollinishoes...

27 MAY 2026

Andy Wool Pull Over

248.00

Emery Twill Cargo Pants

228.00

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Lusi

Verified Reviewer

Rated 5 out of 5 stars

6 days ago

High quality pieces

You can feel the difference when wearing IDA+S, the material is high quality, fitting, and comfortable

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Cathryn D. M.

Verified Reviewer

Rated 5 out of 5 stars

6 days ago

White shirt

I am thrilled with my shirt. Fits perfectly, fabric is lovely quality.

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Nicole U.

Verified Reviewer

Rated 5 out of 5 stars

3 weeks ago

Fabulous shirt!

The Matilda white shirt is the perfect white shirt. Lovely fabric and a quality fit. The buttons on the sleeves really lift this shirt into the elegant category. My first purchase but definitely not my last.

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Carol C.

Verified Reviewer

Rated 5 out of 5 stars

3 weeks ago

Blue denim jeans work a treat

My blue denim jeans form IDA+S fit perfectly and work very well with all my different tops. I missed out on my initial sign-up reduction and after I contacted them about this, they kindly refunded the amount of the reduction I missed out on. I was impressed with their prompt response. I'm thoroughly enjoying wearing my new jeans which will come with me to Greece next month.

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Sandie

Verified Reviewer

Rated 5 out of 5 stars

1 month ago

Beautiful quality and effortless pieces

Love the Esme blouse and Talia Bias cut pants together and as separates. The quality is incredible and fit very comfortable. Would definitely buy from this brand again.

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Lisa

Verified Reviewer

Rated 5 out of 5 stars

1 month ago

Nathi goatskin leather bomber

The most divine softest leather I’ve ever worn. The details in this jacket are amazing, very high quality, I originally got the large but found it a touch tight over the shoulders so gave it to my daughter( who loves it) I then ordered the extra large and it’s the perfect size for me, I like to wear jackets a tad baggy, I wear a size 14

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Samantha J.

Verified Reviewer

Rated 5 out of 5 stars

1 month ago

Isolde Bomber Jacket

I just received my new Isolde bomber jacket. It had been on my wish list for the last six months and finally ordered it. It arrived in around in about a week so very prompt delivery and I am delighted with the fit and the quality of the leather - it is just beautiful! A few days after after I ordered it with the 10% discount the jacket went on sale for 30% off. IDA+S refunded me the difference which was really kind of them. The ability to try on the jacket with different outfits over three days before committing to the sale was also a really good feature. Would definitely buy from IDA+S again in the future!

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Louise C.

Verified Reviewer

Rated 5 out of 5 stars

1 month ago

Amazing quality piece!!

I recently came across this new brand and have fallen in love with it. The pieces are such good quality, with many hidden and subtle details. I can tell the fabrics are top quality. Will be coming back to shop for sure! So glad I discovered this brand.

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Chantelle

Verified Reviewer

Rated 5 out of 5 stars

2 months ago

Gorgeous

Gorgeous skirt. So elegant and well made. It fits a little tighter than expected.

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Catherine W.

Verified Reviewer

Rated 5 out of 5 stars

2 months ago

Isolde Leather Bomber love

I was lucky enough to win the Isolde Leather Bomber in the "1 order a day" promotion this July. The jacket is everything it looks like and more! It is buttery soft and so so comfortable. Fits true to size. Can be work with work pencil skirts, jeans, literally anything. I have work it every day this Sydney Winter. Love love love and 100% recommend.

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Michelle

Verified Reviewer

Rated 5 out of 5 stars

3 months ago

Leni Wool/Cotton Wide Leg Pant

Really nice leisure pants. Great shape, colour and very warm for winter.

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Tracey

Verified Reviewer

Rated 5 out of 5 stars

3 months ago

White shirt amazing

This shirt is perfect. The fit is excellent but the design makes it really stand out. A really unique piece.

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Women’s Designer Clothing

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.

Premium Fabrics and Thoughtful Craftsmanship

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.

Designed for Modern Life

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.

Finding Your Perfect Fit

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.

A Legacy of Independent Craftsmanship

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.

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Select Try Before You Buy

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Payment Hold

We'll reserve the order total on your card, creating a pending transaction, however you won't be charged yet.

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You have 3 days to try everything once your order arrives.

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Pay for what you keep and return the rest. A $10.00 restocking fee is payable if all items are returned

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