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LOU SWIM

Before & after

Experience the LOU difference—where bras are thoughtfully designed for small chests, so you no longer have to settle for awkward gaps, slipping straps, or excess fabric. Our before-and-after showcases the transformation: from ill-fitting tops that flatten or gape, to a beautifully contoured fit that provides gentle lift, natural shape, and all-day comfort. Say goodbye to compromise and hello to confidence, with tops that finally fit like they were made just for you.
  • No Awkward Gaps

    How can you feel sexy in swimwear if you don’t feel comfortable in it (with gaps left, right and centre) and all you can think about is not flashing anyone at the beach…

    No more oversized, deep cups that leave you with awkward gaps. Our shallower cups actually support your sexy small boobs and your dreams of feeling comfortable in your own skin.

  • Natural Lift

    Padding is like an endangered species in the swimwear industry and it shouldn’t be this way. Just like a natural makeup look for your face, our padding lets your boobs look good while still feeling like your beautiful self (and not 2 cups too large).

    The sewn in padding won't shuffle around and can provide you with the sufficient support.

  • Comfort First

    To feel sexy, you must first feel comfortable. Our seamless designs ensure smooth lines and no digging into your legs and armpits.

    Our bikinis are crafted from the highest quality American REPREVE® fibres made from recycled plastic bottles transformed into flattering cuts and designs that ensure the perfect fit and leave you feeling like it’s a second skin.

SIZING

Frequently Asked Questions

WHAT IS A "SMALL CHEST"?

Our swimsuits are catered to small chests which is 1-4 inch difference between your underbust and bust measurement.

E.g. 30" underbust and 31" bust (1" difference)
E.g. 28" underbust and 32" bust (4" difference)

If you are 5-6 inch difference, we recommend you sizing up one size.

E.g. 30" underbust and 36" bust (6" difference) we recommend sizing up from size S to size M.

Unfortunately our swimsuits are not flattering for chests with 7+ inch difference.
That is what makes our swimsuits so special, they are genuinely designed with the small chested women in mind.

BETWEEN SIZES? OR JUST PREFER A RELAXED FIT?

If you are between sizes (e.g. 68cm, 74cm, 80cm, 84cm, 90cm), we recommend that you size up if you prefer a relaxed fit.

If you prefer an extra snug and secure fit, you may wish to size down. We list the size that our models wear on every product page, so make sure to check them out along with their photos to see if that is the kind of fit you would like!

BUYING THE FIO BIKINI?

The FIO has a thick band with less stretch so runs a bit small. If you are towards the upper range of a size or prefer a more relaxed fit then we recommend that you size up.

XXS: 60cm band (68cm max stretch)
XS: 64cm band (74cm max stretch)
S: 67cm band (77cm max stretch)
M: 71cm band (81cm max stretch)
L: 76cm band (86cm max stretch)
XL: 81cm band (91cm max stretch)

Let customers speak for us

from 344 reviews
I love my Erin bikini!

This bikini top fits great! I love it. It's both stretchy and supportive! I can't wait for more colors!

Vanessa V.
ERIN Top
I love these

These will be my second pair of Fio bottoms and I love them! So buttery and soft! Amazing!

Vanessa V.
FIO Bottoms
I love my two Mia bikinis

I ended up ordering this set again because the first time I ordered, I ended up getting more of a blueish color rather than greenish as shown in the photos however I was totally okay with it since it was a beautiful bikini! I now have it in sage and blue! They're buttery and comfortable! I will never buy a bikini in another material again!

Vanessa V.
MIA Bottoms
The best bikini top

Honestly cannot recommend this brand and in particular this top enough! I feel so validated that this brand truly gets that other bikinis are not made for small boobs, and does things differently.
While I don’t have the smallest chest in the world (although I’m definitely still part of the IBTC), almost every other bikini I’ve ever tried makes it look like I have absolutely no boobs. Either that or on the odd occasion I’ve found a padded or push up bikini, it’s so uncomfortably and unnaturally ‘push up’ that I feel like I can’t move for fear of it coming off.
The Fio top fits so well and is so flattering. It has the perfect amount of padding to enhance your chest but I also feel like I could comfortably swim at the beach or go snorkeling or something without feeling like it’s about to fly off. I’ve added another colour to my cart ready for payday.
Last and certainly not least, I love that this brand is sustainable and doesn’t pump out of loads of different styles / colours that might not sell. Sustainability is super important and I wish it was easier for the consumer to do more.

Sam
FIO Top
Buy it!!!

I wear a 32D (aka 32 underbust) and the medium top fits perfectly. I was a little worried when I first ordered since Lou says their tops are for A-B cup sizes (I think?), but I can promise you a 32D is part of the IBTC and this suit helps make the girls look so cute! No gaps and super soft fabric.

Allison
ERIN Top
Sexy legs?!

These are my favorite bottoms! Normally I’m a high waisted girly, but I love how these sit and make your legs look longer. True to size as well.

Allison
FIO Bottoms
Best top ever!

As a member of the ITBTC I have NEVER been more confident in a swimsuit. Especially after have 3 kids. My breasts are never appealing in a swimsuit but this top is PERFECT. I followed the size guide and measured myself and it fits perfectly and pushes the girls up nicely without making it feel like I’m going to fall out. Seriously, couldn’t be happier with this too.

Torrie C
ELLIE Top
Amazing + Perfect!!

The Holly Bottoms fit perfectly and it’s soooo comfy! 10/10 recommend :)!

Sav
HOLLY Bottoms
So Cute

This top is phenomenal, the padding and the style fit great and gives me cleavage (??!! ME?!) it's definitely a bit more risqué than I usually wear but it's perfect for special occasions. My only gripe is that I brushed up against the stone poolside and it immediately snagged :(, so I guess be careful in this suit if you're actually going to go swimming.

Leah G
MIA Top
New fav brand?!

Shipping was so fast! Love the push up, fabric is very high quality, and front tie is nice for adjusting. I wear a 34C/32D and went with a medium - fits good. All in all, worth the price. I ordered three.

Allison
TORI Top
Loveeeee

Love the push up, fabric is very high quality, and front tie is nice for adjusting. I wear a 34C/32D and went with a medium - fits good. Shipping was also really quick.

Allison
TORI Top
So cute!

Love the push up, fabric is very high quality, and front tie is nice for adjusting. I wear a 34C/32D and went with a medium - fits good.

Allison
TORI Top
Perfect comfy swimsuit ever!

I absolutely love this swimsuit! The fit is incredibly flattering, hugging all the right places while still being super comfortable. The material is high-quality—thick enough to feel supportive but still stretchy and breathable. I felt confident and stylish both at the pool and the beach. The color hasn’t faded after several washes. I’ve received so many compliments while wearing it. Definitely a must-have for anyone looking for a go-to swimsuit!

kzrm
ERIN Top
Love the fit!

Perfect colour and fit for me. Finally feeling confident in a bikini top:))

NM
MIA Bottoms
Amazing!!

I got the FIO top and HOLLY bottoms and they fit wonderfully! It has taken me forever to find a place that fits me and I came across Lou! I will definitely be ordering from here from now on! I love it!!

Sav
FIO Top

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