Swim Sizing
WHAT MAKES LOU SWIM DIFFERENT?
As a fellow IBTC member, Louise Chen understands the struggles of having a small chest in the water. Our padded swimwear are designed specifically for our IBTC girlies with small boobs so that it fits like a second skin (not like some floaties)!
As an additional guide to help you find your perfect fit, our models' measurements (bust, underbust, hips and waist) are listed on each product page they are featured in.
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?
SHOP FIO
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)
HOW TO MEASURE
A. BUST: Measure around the fullest part of your chest, keeping the measuring tape horizontal.
B. UNDERBUST: Measure right underneath your breasts, keeping the measuring tape horizontal.
C. WAIST: Measure around the narrowest part (typically where your body bends side to side), keeping the tape horizontal.
D. HIPS: Measure around the fullest part of your lower body, keeping the tape horizontal.
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.
Let customers speak for us
Beautiful blue color and beautiful suit!
I bought the full Fio suit and I love it! The bottoms fit great and are so cute. And the Olympian blue color is lovely!
Lauren
FIO Bottoms
So cute!
Love this swimsuit! It's flattering and a beautiful suit. The gold clasp is an elegant touch! I think I'm on my way to replacing all my swimwear with Lou :)
Lauren
FIO Top
5 stars!
I love it!! For years, I've been hiding my small chest behind high-neck halter and bandeau-style bikini tops. Not anymore! This is the first time I've ever felt confident in a low cut bikini. I honestly can't believe how well it fits and flatters 🤩 Thank you for helping small chested women feel confident!
Lauren
TORI Top
Never felt this confident
Initially I thought that I had purchased the wrong size in the Tori top, as I didn't get the oomph while wearing it, BUT after I figured out that I just needed to tie it better (check Louise's IG/TT videos for tips), it is AMAZING! So flattering and comfortable! I had pretty much given up on ever thinking that a bikini could give me cleavage until this. I ordered the set in black and wasn't sure if the black would be too slimming for the area I wanted to amplify but it wasn't. It really gives me confidence in being in a swimsuit - love it so much. Well-made, packaging is cute and shipping to Canada was also really fast.
Cherryl
TORI Top
Best thing ever
This white FIO top is the best thing I ever put on myself. It fits perfectly, and the white color compliments my skin even now when I don't have tan yet. (Still winter) Good thing they wrote to order a size up, so I took L instead of M and it's perfect. Now I want more colors!!
V.
FIO Top
Ticks all the boxes
Exactly what I was looking for in bottoms!! Flattering and cheeky in the back with great coverage still in the front. Highly recommend for anyone looking for a thong bottom!
Lucinda
SABRINA Bottoms
So cute and comfy
No need to adjust and constantly watch out for it slipping, very comfortable, definitely a favorite piece <3 thank you
Anonymous
ELLIE Top
Gorgeous quality
So flattering, stunning colour, love the material. Offers a bit more butt coverage than the Hannah bottoms if that's what you're looking for ;-)
Lucy Ford
TORI Bottoms
Yes!
Tight in all the right places to accentuate your features in the best way! The fabric and craftmanship is so high quality. Can't stop, won't stop buying Lou Swim! <3
Lucy Ford
ELLIE Top
Definitely on the cheeky side!
After getting used to the way it sits on my butt (it's a bit more exposed than the full bikini coverage I am used to haha!) it's the only high-waisted bikini bottoms I've ever found to be flattering. The material feels lovely and I love that it's sustainably sourced.
Lucy Ford
HANNAH Bottoms
Super flattering
Fits exactly like you hope it would! Feel both comfortable and cute in it! Thank you Lou Swim! Will be buying again for sure - big fan! XO
Lucy Ford
TORI Top
Perfect!
My new favorite bra! I never found any bra that would fit me perfectly, until now. I was very worried at first but after i tried it on, I was blown away. I've never felt more confident and beautiful. I'll definitely buy more in the future!
Dominika P.
RIRI Plunge Bra
Feels and looks great!
Love the top! Fits perfectly and I adore the in-built padding. 10/10 thank you!
Locket Lee
ELLIE Top
Fits me perfectly
Love the colour and the fit! 5 stars for me!!
Locket Lee
HOLLY Bottoms
Fits great. Best swim top!
The swim top makes my girls look great and gives a natural looking left.
Amanda Jurgelewicz
ELLIE Top
