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T-Shirt Bras

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Nizza Wirefree Soft Moulded Cotton Bra Sand
Nizza Wirefree Soft Moulded Cotton Bra Sand
Model wearing PrimaDonna Orlando Full Cup Bra in Eye Shadow – styled for The Foundation’s signature comfort and elegance.
 
Model wearing PrimaDonna Orlando Full Cup Bra in Eye Shadow – styled for The Foundation’s signature comfort and elegance.
Front view of the PrimaDonna Orlando Full Cup Bra in Eye Shadow, shown on model for The Foundation.
Rosalia Full Cup Side Support Bra Ivory – front view on model with soft foam-lined straps – The Foundation
 
Rosalia Full Cup Side Support Bra Ivory – front view on model with soft foam-lined straps – The Foundation
Close-up of Rosalia Bra Ivory – underwire detail and embroidered fabric – The Foundation
Save up to 30%
Model sitting in rose mauve full cup bra and briefs set—The Foundation
 
Model sitting in rose mauve full cup bra and briefs set—The Foundation
flat lay of Panache Envy Full Cup Bra in rose mauve—The Foundation
Side view of the Pink Diamond Madison bra showing shaping cups and lace detailing—The Foundation
 
Side view of the Pink Diamond Madison bra showing shaping cups and lace detailing—The Foundation
Madison Full Cup Bra Pink Diamond
Side view of PrimaDonna Deauville Full Cup Bra in Café Latte – supportive, flattering fit for fuller busts – The Foundation
 
Side view of PrimaDonna Deauville Full Cup Bra in Café Latte – supportive, flattering fit for fuller busts – The Foundation
Deauville Full Cup Bra Cafe Latte I - K Cup
Chantelle Parisian Allure Brief in Nude, showcasing fishnet tulle side inlays and gold charm at the front.
 
Chantelle Parisian Allure Brief in Nude, showcasing fishnet tulle side inlays and gold charm at the front.
Back view of Chantelle Parisian Allure Brief in Nude with a seamless back design for invisible comfort under clothing.
Marie Jo Yoly Heart Shaped T-Shirt Bra in Jewel Green with fuchsia lace, lightly padded with embroidered cups and bold contrast trims.
 
Marie Jo Yoly Heart Shaped T-Shirt Bra in Jewel Green with fuchsia lace, lightly padded with embroidered cups and bold contrast trims.
Marie Jo Yoly Heart Shaped T-Shirt Bra in Jewel Green with fuchsia lace, lightly padded with embroidered cups and bold contrast trims.
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Caresse Rigid Seamless T-Shirt Bra Black
Caresse Rigid Seamless T-Shirt Bra Black
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Nerina Moulded Spacer T-Shirt Bra Sahara
Nerina Moulded Spacer T-Shirt Bra Sahara
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Subtile 3D Plunge Contour Bra Black
Subtile 3D Plunge Contour Bra Black
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Subtile 3D Plunge Contour Bra Peau Rose
Subtile 3D Plunge Contour Bra Peau Rose
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Andora 3D Contour Bra Black
Andora 3D Contour Bra Black
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Perfectly Fit Lightly Lined T-Shirt Bra Cedar
Perfectly Fit Lightly Lined T-Shirt Bra Cedar
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Back Appeal Front Close T-Shirt Bra Rose Dust
Back Appeal Front Close T-Shirt Bra Rose Dust
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Caresse Rigid Seamless T-Shirt Bra Peau Rose
Caresse Rigid Seamless T-Shirt Bra Peau Rose
front view of Model wearing the Brooklyn Plunge T-Shirt Bra Gardenia from The Foundation – soft tulle, lace detail, and deep V neckline.
 
front view of Model wearing the Brooklyn Plunge T-Shirt Bra Gardenia from The Foundation – soft tulle, lace detail, and deep V neckline.
Back view of the Brooklyn Plunge T-Shirt Bra Gardenia from The Foundation – double-lined mesh band and adjustable straps.
Save up to 30%
Model wearing the Jane Padded Heart Shape Bra in Velvet Blue, highlighting the deep plunge neckline and embroidered cups.
 
Model wearing the Jane Padded Heart Shape Bra in Velvet Blue, highlighting the deep plunge neckline and embroidered cups.
Front view of Jane Padded Heart Shape Bra Velvet Blue from The Foundation, featuring feminine plunge and delicate embroidery
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Jane Padded Heart Shape Bra Bois De Rose
Jane Padded Heart Shape Bra Bois De Rose
Marie Jo Tom Heart Shaped Bra in Scarlet – front view – The Foundation
 
Marie Jo Tom Heart Shaped Bra in Scarlet – front view – The Foundation
Side angle of Tom Convertible Bra in Scarlet showing deep plunge – The Foundation
Front view of the Marie Jo Avero Heart Shape Contour Bra in Atlantic Blue, showing light denim blue tone with daisy strap detail.
 
Front view of the Marie Jo Avero Heart Shape Contour Bra in Atlantic Blue, showing light denim blue tone with daisy strap detail.
Three-quarter view of model wearing the Avero bra in Atlantic Blue, highlighting supportive plunge cups and soft sheen fabric.

A good t-shirt bra is one of those everyday heroes that works quietly behind the scenes. It's your go-to for a smooth, seamless look under clothes—whether you're wearing a tee, blouse, or dress. At The Foundation, we offer a wide range of t-shirt bras from everyday essentials to premium pieces that blend comfort, support and invisible style.

Our collection includes customer favourites from Triumph, Chantelle, Calvin Klein, Empreinte, and more. From lightly padded styles to moulded lace cups that still disappear under clothes, there's something for every preference and outfit. Need help choosing? Pop in for a fitting at our Neutral Bay, Rozelle, or Bowral stores and let us help you find your perfect fit.

FAQs About T-Shirt Bras

1. What is the best colour for a t-shirt bra?

Nude or skin-tone bras are best under light-coloured clothing. Black works well under darker outfits. Fun fact—some shades of red actually disappear under white!

2. Can I wear a lace bra under a t-shirt?

You can, as long as the lace lies flat and your top isn’t too sheer. Styles like the Empreinte Cassiopee offer elegant lace and a smooth finish for invisibility under most fabrics.

3. How do I prevent bra lines from showing under a t-shirt?

Opt for seamless, lightly padded or moulded cups like the Triumph Gorgeous T-Shirt Bra. Make sure you’re in the right size to avoid bulging or digging in.

4. Should I size up or down in a t-shirt bra?

Not all t-shirt bras fit the same. Sizing can vary by brand and style—so it’s worth getting a professional fitting. You might wear two or three different sizes depending on cup shape and depth.

5. How often should I replace my t-shirt bra?

Every 6–12 months, depending on how often you wear it. Rotate your bras, and when your current one starts to feel stretched out or loses support, it’s time for a new one.