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Leakproof Crossover Cami
Leakproof Crossover Cami
Size Guide
What's My Size?
Please note: we size by your bust and underbust, not by the clothing or body size you normally buy.
Each body is unique and your shape may shift while you're expecting and after birth, so treat these charts as a helping hand toward your ideal fit.
Since these pieces include a built-in leakproof shelf bra, pick your size using your bust and underbust numbers.
Styles like the Leakproof Maxi Dress are cut deliberately loose. Choose them by bust and underbust as well; the A-line shape glides gently over the body and hips and leaves lots of space to move, grow and stay comfy during pregnancy, postpartum and later on.
Our Leakproof Pyjama Top and the Bump-to-Baby Bodysuit come with a built-in leakproof shelf bra as well, so select them by your bust and underbust too.
Sitting between two sizes? Go by your bust and underbust, then think about how snug or relaxed you want the piece to feel.
Find Your Size Below:
Size Chart: Bras, Camis, PJ Top, Bodysuit & Maxi Dress
| Size | BUST (IN) | UNDERBUST (IN) |
|---|---|---|
| S | 29.5 - 33.5 | 25 - 30 |
| M | 33.5 - 36 | 29.5 - 32 |
| L | 36 - 38 | 31 - 33 |
| XL | 37.5 - 40 | 32 - 35 |
| XXL | 39 - 42 | 34 - 37 |
| Size | BUST (CM) | UNDERBUST (CM) |
|---|---|---|
| S | 75 – 85 | 64 – 77 |
| M | 85 – 92 | 75 – 81 |
| L | 92 – 98 | 78 – 84 |
| XL | 96 – 103 | 82 – 88 |
| XXL | 101 – 108 | 86 – 94 |
PJ Bottoms + Briefs Size Chart
| Size | HIPS (IN) | WAIST (IN) NOT APPLICABLE IF PREGNANT |
|---|---|---|
| S | 35.8 - 38.2 | 28.0 - 29.9 |
| M | 38.2 - 40.2 | 29.1 - 31.5 |
| L | 40.2 - 42.5 | 31.5 - 33.1 |
| XL | 42.5 - 44.9 | 33.1 - 35.4 |
| XXL | 44.9 - 47.2 | 35.4 - 37.8 |
| Size | HIPS (CM) | WAIST (CM) NOT APPLICABLE IF PREGNANT |
|---|---|---|
| S | 91 - 97 | 71 - 76 |
| M | 97 - 102 | 74 - 80 |
| L | 102 - 108 | 80 - 84 |
| XL | 108 - 114 | 84 - 90 |
| XXL | 114 - 120 | 86 - 96 |
UNDERWEAR MEASUREMENTS
*** Expecting? Skip the waist figure and choose your size from the hip measurement alone. The Belly Briefs + PJ Pants stretch comfortably over a bump.
WAIST: Measure around the slimmest part of your waist.
HIPS: Measure around the fullest part of your hips.
If your numbers fall across two sizes, choose the larger size for comfort or the smaller one for a snugger hold.
How to Measure
A note on sizing:
Bralette and Cami sizes are worked out from your bra cup and underbust, rather than the clothing or body size you'd usually pick. Use the charts as a guide toward the fit that suits you best.
Every piece in the range uses a very stretchy fabric with a supportive, smoothing feel that flexes with you as you move.
Bodies vary, and your shape and measurements can shift during pregnancy and postpartum. The Leakproof collection is made to take you from pregnancy right through to postpartum. Always factor in how you personally like things to fit and feel.
Pregnant and between sizes? Choose the larger one so there's room for the changes your body goes through while expecting and postpartum, such as when your milk arrives.
Let's Find Your Size
1. Work out your bra cup size
Your cup size may shift while you're pregnant and after birth, so base your choice on where you are in your journey right now.
2. Measure your underbust
Run a tape measure around your ribcage just below your bust, where a bra band normally rests. Hold it level with the floor; it should feel snug and comfortable, never tight.
3. Allow for fluctuations
Landing between two sizes on your underbust? Size up when you're pregnant or expect more changes after giving birth - especially in the first postpartum weeks as your milk arrives.
4. Belly Support Briefs & Pyjama Pants
Measure around your waist and hips with a tape measure. During pregnancy the waist number may not reflect your true size, so pick based on your hip measurement alone.
5. Still unsure?
Send our team an email and we'll gladly help you choose the right size and explain how each style is meant to fit.
Any other sizing questions? We're always glad to lend a hand.
contact@mummamillashop.com
Fit Tips
- Starting point
Know your current bra size and use a tape measure to find your underbust. Place the tape around your body below your bust, roughly where your bra band sits, keeping it straight and parallel with the floor. It should sit snug, not tight - no squeezing and no bulging. - In Between Sizes?
Think ahead to the final weeks of pregnancy and to your milk arriving a few days after birth. If you fall between two sizes, going up may be the better choice. - A Note on our Styles
Every leakproof piece is cut from stretch fabric and wears from bump to baby.
The camis come with an integrated shelf bra - no pads, no wires.
The Day and Triangle bras have slim-line cups sewn in, t-shirt bra style.
Each style carries our signature slim-line leakproof technology, apart from the pyjama pants/shorts and the briefs. - Mumma Milla Sizing
Our leakproof bras and camis are all sized by cup size.
Rather than traditional bra sizes (e.g. 12D, 14B), we fold several sizes into each of our categories (S/M/L/XL/XXL) to choose from. - Bump Friendly? Yes!
Made to wear through pregnancy, postpartum and beyond! - Wire Free
No wires and no clips in any style - just comfort. - Belly Support Briefs + PJ Pants
Measure your hips and waist with a tape measure to find your size. While pregnant, ignore the waist figure and size from the hip measurement instead. - Bodysuit
The bodysuit has our signature built-in leakproof shelf bra. Its light compression fabric moulds to your shape, so we size it by bra size.
For the most accurate numbers, use a soft tape measure. Questions? Email us at contact@mummamillashop.com.
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Our newest leakproof crossover cami.

Customer Reviews
The Leakproof Crossover Cami is just what I was looking for. Good quality and fair price.
Had a question before ordering and customer service answered within a few hours. Product is great too.
Love it. Already recommended it to two friends.
Easy to order, quick delivery and the product matches the description.
Really well made. You can tell attention went into the details.