Ultimate Wireless Bra Seamless | Everyday Comfort & Support | Katie Em Undies

Regular price $29.00 USD

Final Sale — all sales on marked-down items are final.

In-store availability may vary.


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Colour: BLACK
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in 1-2 business days
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The everyday essential you'll forget you're wearing. The Ultimate Wireless Bra delivers the perfect blend of natural shape and support without a single wire. Featuring a seamless finish and wide smoothing band, it provides flexible comfort that adapts to your body.

Why You'll Love It

  • Wire-Free Relief: Enjoy gentle, reliable wireless support and a flattering, natural shape all day long.
  • Seamless Silhouette: Lies completely flat under knitwear and t-shirts for an invisible, smooth look.
  • Ultra-Soft Fabric: Made from stretchy, plush material that offers flexible, hug-like comfort.
  • Built-in Smoothing: Features a wide bottom band for extra smoothing and gentle lift across the torso.
Description

Experience the difference of a bra that works with your body, not against it. The Ultimate Wireless Bra Seamless from Katie Em Undies is designed to be your new favourite daily foundation, providing support and shape so comfortably, you might forget you have it on.

This comfortable seamless bra is the result of high-quality fabric and thoughtful design. We eliminated the uncomfortable wires and instead rely on a supportive structure and plush, ultra-soft, stretchy fabric (85% Polyester, 15% Elastane) that gently shapes and lifts.

Crucially, the seamless design ensures this bra stays invisible under clothing, solving the common dilemma of lines or bulk under fitted tops. The addition of a wide band wireless bra design not only provides extra support but also contributes to a smoother silhouette across the back and sides, making this your go-to smoothing wire-free bra.

Available in core colours like black, nude and fashion colours like blue, plum and magenta pink, this bra is available SM-XL.

Due to the stretch of the fabric, if you are between sizes, we recommend you size down as the bra will relax slightly with wear. This bra is designed to accommodate various cup sizes comfortably; for example, our model is a 36E cup wearing size Large, demonstrating its flexible fit.

Fit Notes

This bra offers a relaxed, true-to-size fit that provides light-to-medium everyday support.
Fit Rating: 3/5 (Fits True to Size)
Sizing Guidance: The bra runs true to size with a generous amount of stretch. For the best, most supportive long-term fit, we suggest sizing down if you are between sizes, as the fabric will naturally relax with wear. Do not size up.
Model Sizing: Model is a 36E Cup wearing size Large.

Frequently Asked Questions

Q. Does this bra have clasps or is it a pull-over style?

  • A. The Ultimate Wireless Bra is a comfortable pull-over style with no irritating back clasps or hook-and-eye closures.

Q. Is this bra suitable for larger bust sizes?

  • A. While designed for comfort and everyday wear, the stretchy, supportive fabric is worn by various sizes. Our model, for example, is a 36E cup wearing a size Large. If you require high impact or structured support, this may not be the best choice.

Q. Does this bra have padding?

  • A. This bra is unpadded, featuring a double layer of fabric for coverage and support while maintaining a natural shape.
Shipping & Final Sale Policy

Sale items are priced to move and, because of that, we're not able to offer returns or exchanges on anything marked down. We know that's not always convenient — if you're unsure on sizing, our size chart and team (in-store or via chat) are happy to help before you order. Full-price items still enjoy our standard return policy.

SKU: 127925
  • 5 stars: 27 (93%)
  • 4 stars: 2 (7%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
M
Marcy (Ontario, Canada)
NUDE / MD
Fit: True to Size
Feel: Invisible
Fabric: Smooth
Excellent coverage

No lines! Very comfortable and amazing coverage. Highly recommend.

C
Catherine D.
STONE BLUE / LG
Feel: Comfy
Fabric: Silky and smooth
I love these undies!

Great quality and fit!

Quality and fit are everything when it comes to the basics! We're so happy you're loving how silky and comfy these are, Catherine!

H
Hariette M. (Alberta, Canada)
PEACHY NUDE / LG
Feel: Need more support
Fabric: Love the fabric, very comfortable
Bras

The bras are nice & comfortable but I need more support

Thank you for sharing your thoughts, Hariette! We’re glad you love the fabric and comfort, and we appreciate your note about support — it’s helpful for us and other shoppers to know.

T
Theresa L. (Alberta, Canada)
BLACK / SM
Very comfortable and seamless

Love these undies, doesn’t feel like you’re wearing anything at all

Thanks, Theresa! We’re so glad you’re loving the seamless feel — the best kind of undies are the ones you forget you’re even wearing! 😊

A
Anonymous (Alberta, Canada)
MD / PLUM WINE
Fit: True to Size
Feel: Supportive yet flexible
Fabric: Breathable and the right level of stretch
Ultimate Wireless Bras are Heaven!

I originally bought one of these bras to wear at home thinking it would not be something I could wear in public. That soon changed as I realized how comfortable AND supportive they are with excellent coverage! The last time I put on a "real" bra, I could not keep it on for even 5 minutes as it was so uncomfortable! Katie Em bras are awesome!

Kimberley, this is exactly why we love Katie Em bras too — total comfort without compromising support! We're so glad they've become your everyday go-to (and that “real” bras are officially on notice!). Thanks for the kind words!

A
Anonymous (Alberta, Canada)
BLACK / SM
Fit: True to Size
Feel: Very natural
Fabric: Feels like your own skin
High Rise Brief

Excellent fit feels great on my skin

Thanks so much, Sham! We’re thrilled the high rise briefs are feeling fabulous — comfy, smooth, and made to love your skin. Enjoy the ultimate everyday essential! ✨

L
Linda D. (Alberta, Canada)
PEACHY NUDE / SM

Love them and Shawna is always so friendly and helpful 💜

Aw, thanks Linda! We’re so glad you’re loving your Katie Em bras — and we totally agree, Shawna is a gem Comfort and kindness are kind of our thing!

K
Kim O. (Alberta, Canada)
NORDIC BLUE / SM

New favourite!

J
Jen (British Columbia, Canada)
NUDE / LG
MAGICAL PJS!!!!

I can not say enough about these! My boyfriend bought them for me for Christmas and they are honestly the best things in the world! I sweat a lot when I am sleeping and used to wake up drenched. Now me and my bedsheets are dry and cool all night! THEY ARE MAGICAL!!!!

S
Susan M. (Alberta, Canada)
XL / NUDE

Ultimate Wireless Bra Seamless

T
Tanya L. (Alberta, Canada)
Beautiful

It is very comfortable and it feels you are not wearing a bra. I would recommend to a friend and other people who wants a relaxing fit. Great fabric to deal with moisture wicking . More colors to choose from .

S
Sarah (Alberta, Canada)
PLUM PURPLE / LG
Great

I love these! The new higher waist is fantastic. So comfy!

K
Katherine F. (British Columbia, Canada)
PLUM PURPLE / XL
lovely bamboo nightdress

cooling breathable flexible nightie that’s totally comfortable

C
Carrie L. (Alberta, Canada)
MD / NUDE
Amazing store and products.

My PJ place for sure! I have been in a couple of the stores and the girls are all so friendly and helpful with finding the right size and product. Once you know your size it is easy to order on line as everything then fits true to size. I recently lost weight so was unsure of my size. Two big thumbs up and I love the bamboo moisture wicking at my age!

A
Angela P. (Alberta, Canada)
BLACK / MD
Cloud nine panties

Love them. My Mom loves them and put me in touch with you. Feels like you are wearing nothing. Will for sure be getting more

K
Kimberley v.T. (Alberta, Canada)
NUDE / LG
Cozy to the max!

I purchased Katie M underwear and a cozy purple shacket from Cloud Nine Pajamas and I LOVE the items! The colours are beautiful, the materials are so soft and luxurious, the colours remain beautiful - even after washing the items many times. I highly recommend!

R
Rebecca S.S. (British Columbia, Canada)
NUDE / LG
Great quality and fit

No regrets, completely happy. Going back to buy more pairs.

R
Ruth D. (Alberta, Canada)
BLACK / LG
Thank you

Thoroughly enjoying the chain link necklace. The earrings aren’t among my favourites but ok. The popcorn & salted caramels will be enjoyed over the holidays…
Briefs are a bit higher than expected but nice fabric.

H
Hariette M. (Alberta, Canada)
BLACK / MD
Pleased

I’m so pleased with the briefs, I absolutely love them.

S
Sally K. (Manitoba, Canada)
SM / NORDIC BLUE
Excellent!

Wonderful underwear and bras, so comfortable and perfect fit!
Excellent customer service.
Will definitely order online again.

J
Jennifer B. (Nova Scotia, Canada)
XL / NUDE
Sleepwear

Fantastic. Very comfortable.

K
Kimberley v.T. (Alberta, Canada)
LG / NUDE
Comfy and invisible!

I LOVE the Katie M bra's! They're my absolute favorite. Very comfortable, fits perfectly, is invisible under clothes. The colours stay very vibrant, even after many washes. Very happy with this product! I have it in 4 colours now :-)

Once a Katie Em bra lover, always a Katie Em bra lover! We've got more colours heading this way soon! Thank you so much for the love - as the designers it's our favourite thing to hear!

G
Gidget D. (Alberta, Canada)
XL / NUDE
The best ever!

This bra is the best & at this stage in life comfort is on top of list & these bras win it hands down!

L
L.H. (British Columbia, Canada)
MD / BLACK
Katie em wireless bra

My decision to purchase this bra online was pending due to uncertainty of fit.
When it became available during a bogo sale event I couldnt refuse. I purchased 1 nude shade and 1 black.
I was looking for minimal detailing which I would be comfortable wearing during heat waves during the summer months.
This bra offers exactly that. It is lightweight, soft material, no irritation from itchy tags, clasps, or shoulder strap adjustments. There is no sweating beneath bustline/ribcage which I sometimes experience.

The foam cups I removed after 2 days of wearing as I didnt like the look of 2 unnatural circulars. They reminded me of breastfeeding pads so I removed them. I think a teardrop shape would have been better. The bra is totally fine without the cups, they can be easily removed through a small opening slit. The polyamide material acts like a compression against my chest, so it does flatten. Be mindful of this if you are less endowed. I find the appearance less flattering than that of a regular push up. Perhaps this may be well suited for a fitness class or other activity. Overall I am very pleased with this product. I will continue to wear this purchase in comfort.

Hi Laura,

I am so glad that you are enjoying the bras! Thank you for the great feedback! I hope it kept you cool in the warm weather!

Stay Cozy,
Kate
Owner

L
L.H.
Katie em wireless bra

My decision to purchase this bra online was pending due to uncertainty of fit.
When it became available during a bogo sale event I couldnt refuse. I purchased 1 nude shade and 1 black.
I was looking for minimal detailing which I would be comfortable wearing during heat waves during the summer months.
This bra offers exactly that. It is lightweight, soft material, no irritation from itchy tags, clasps, or shoulder strap adjustments. There is no sweating beneath bustline/ribcage which I sometimes experience.

The foam cups I removed after 2 days of wearing as I didnt like the look of 2 unnatural circulars. They reminded me of breastfeeding pads so I removed them. I think a teardrop shape would have been better. The bra is totally fine without the cups, they can be easily removed through a small opening slit. The polyamide material acts like a compression against my chest, so it does flatten. Be mindful of this if you are less endowed. I find the appearance less flattering than that of a regular push up. Perhaps this may be well suited for a fitness class or other activity. Overall I am very pleased with this product. I will continue to wear this purchase in comfort.

B
Brittany A. (Alberta, Canada)
Best Bra Ever!

This is one of the most comfortable bras that I own! The soft fabric feels so nice on, and washes beautifully! It is clear that it was designed to fit and flatter everyone. I like that you can easily remove the inner cups or keep them in as they do provide really nice shape. A must have in your closet!