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T-Shirt Bras

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Model in Gorgeous Mama Maternity Bra Black showing nursing clip on cup with lace trim.
 
Model in Gorgeous Mama Maternity Bra Black showing nursing clip on cup with lace trim.
Front view of Model wearing full-view Gorgeous Mama Maternity Bra in black with wide band and supportive design.
Model wearing Gorgeous Mama Maternity Bra in Nude with one cup unclipped to show drop-down nursing feature.
 
Model wearing Gorgeous Mama Maternity Bra in Nude with one cup unclipped to show drop-down nursing feature.
Front view of Model in full view wearing Gorgeous Mama Maternity Bra Nude with lace trim and padded underbust.
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Comete Plunging Moulded Underwire Bra Sable Rose
Comete Plunging Moulded Underwire Bra Sable Rose
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Abellia Underwire Full Cup Bra Gardenia
Abellia Underwire Full Cup Bra Gardenia
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Embrace Lace Plunge Underwire Bra Angel Wing/Rose Dust
Embrace Lace Plunge Underwire Bra Angel Wing/Rose Dust
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Perfectly Fit Strapless Demi Bra Cedar
Perfectly Fit Strapless Demi Bra Cedar
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Lush Plunge T-Shirt Bra Miami Pink
Lush Plunge T-Shirt Bra Miami Pink
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Norah Chic Plunge T-Shirt Bra Candy Pink
Norah Chic Plunge T-Shirt Bra Candy Pink
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Soft Stretch Padded Top Icy Powder
Soft Stretch Padded Top Icy Powder
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Celeste Balcony Bra Cameo Rose
Celeste Balcony Bra Cameo Rose
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Abellia Plunge Push Up Bra Gardenia
Abellia Plunge Push Up Bra Gardenia
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Perfectly Fit Push Up Plunge Bra Black
Perfectly Fit Push Up Plunge Bra Black
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Cassiopee Underwire Seamless Full Cup Bra Electric Pink
Cassiopee Underwire Seamless Full Cup Bra Electric Pink
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Soft Stretch Padded Top Ink Shimmer Print
Soft Stretch Padded Top Ink Shimmer Print
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Invisibles Comfort Lightly Lined Bralette Black
Invisibles Comfort Lightly Lined Bralette Black
Close-up of the Pila Wirefree Bra in Love Pink/Peach showing plunge neckline and smooth cups – available at The Foundation.
 
Close-up of the Pila Wirefree Bra in Love Pink/Peach showing plunge neckline and smooth cups – available at The Foundation.
Front view of the Pila Wirefree T-Shirt Bra in Love Pink/Peach with adjustable straps – from The Foundation collection.
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Model wearing the Manhattan Non Wire Triangle Bra in Talc with lightly padded cups and graphic tulle finish.
 
Model wearing the Manhattan Non Wire Triangle Bra in Talc with lightly padded cups and graphic tulle finish.
Back view of the Manhattan Non Wire Triangle Bra in Talc, showcasing striped-look band and wireless fit.
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Romance Wirefree Support T-Shirt Bra Golden Beige
smooth wirefree bra, non wire t-shirt bra, moulded wirefree t-shirt bra, large cup wire free bra, big boobs wirefree bra
Plus-size model wearing the Triumph Ladyform Soft WX Bra in Smooth Skin , showing supportive fit and comfortable lace design.
 
Plus-size model wearing the Triumph Ladyform Soft WX Bra in Smooth Skin , showing supportive fit and comfortable lace design.
“Close-up of Triumph Ladyform Soft WX Bra in Smooth Skin, highlighting lace trim and underwire support.
Front view of the Triaction Ultra W Sports Bra in White, showing supportive fit for high-impact workouts.
 
Front view of the Triaction Ultra W Sports Bra in White, showing supportive fit for high-impact workouts.
Side profile of a model wearing the Triaction Ultra W Sports Bra White, highlighting underwired support.
Front view of Wacoal Raffine Chemise Black on model featuring soft stretch lace neckline and micro modal skirt.
 
Front view of Wacoal Raffine Chemise Black on model featuring soft stretch lace neckline and micro modal skirt.
Mohala Balcony Bra Vintage Natural
Woman wearing a beige bra against a plain background
 
Woman wearing a beige bra against a plain background
Front Close Cotton Posture Support Bra Damask Nude
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Posie Racerback Wirefree Tshirt Teen Bra Blush
Posie Racerback Wirefree Tshirt Teen Bra Blush
Samanta Amelia Full Cup Side Support Bra Black, plus-size model front view, supportive full cup bra with German lace, luxury lingerie for fuller busts.
 
Samanta Amelia Full Cup Side Support Bra Black, plus-size model front view, supportive full cup bra with German lace, luxury lingerie for fuller busts.
Back view of Amelia Midi Brief Black, highlighting lace coverage and mid rise fit, from The Foundation’s lingerie collection.

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.