Find Your Perfect Fit

Swimwear should fit your body — not the other way around.

Buying swimwear online can feel like a bit of a gamble, especially when you’re shopping for a fuller bust. We’re here to take the guesswork out of it. Use our guide below to find your measurements, choose your size, and understand how your Aqua Bay suit should fit.

  • Measure First

    Your measurements are more useful than the size on the label.

  • Fuller Bust? We've Got You.

    Our suits are designed with D-cup-and-up busts in mind.

  • Between Sizes?

    Don't guess — email us and we'll help.

  • Moves With You.

    Supportive and comfortable, never digging or restrictive.

Know Your Measurements

A few quick measurements are all you need.

Use a soft measuring tape and measure directly against your body, without pulling the tape too tight.

1. Bust
Measure around the fullest part of your bust, keeping the tape level across your back.

2. Underbust
Measure directly underneath your bust, where your bra band naturally sits.

3. Waist
Measure around the narrowest part of your natural waist.

4. Hips
Measure around the fullest part of your hips and bum.

Then compare your measurements with our size chart below.
SIZE FITS LIKE 1. BUST 2. UNDER BUST 3. WAIST 4. HIPS CUP
XS Glamorous 0-2 31-33 25-28 24-26 33-35 B-D
S Stunning 4-6 34-36 29-31 27-29 36-38 B-E
M Magnificent 8-10 37-39 32-34 30-32 39-41 C-G
L Lovely 10-12 40-42 35-37 33-35 42-44 C-G
XL Exquisite 14-16 43-45 38-40 36-38 45-47 D-H
XXL Divine 18-20 46-48 41-43 39-41 48-50 D-H
XXXL Dazzling 22-24 49-51 44-46 42-44 51-53 D-H

Understanding Cup Size

Not sure of your cup size? We can help.

Your suggested cup size is based on the difference between your bust and underbust measurements.

Take your bust measurement minus your underbust measurement, then take the difference and refer to the chart below. (Ex 40"-36"= 4" which is D cup) 

Don't see your exact cup size? Don't worry. 

Our adjustable designs and removable cups offer flexibility, and many women comfortably fit outside the suggested cup range.
DIFFERENCE CUP SIZE
1" A
2" B
3" C
4" D
5" DD
6" F
7" G
8" H

How Should Your Suit Fit?

Snug, supportive, never restrictive.

Swimwear should feel comfortably secure when you first put it on. Your Aqua Bay suit may feel slightly snug when dry — that's intentional. The fabric and construction are designed to move with you and relax slightly in the water.

For fuller busts:

Your bust should feel supported and contained without spilling over the top or sides.

Adjustable back fastenings allow you to customize the fit around your body, while our firm, removable cups provide additional shaping and support.

If you're between sizes:

Your measurements are a starting point, but fit can vary depending on your proportions and the style.

If you're unsure, message us using the form below before ordering and we'll help you choose.

Still Not Sure? Ask Us.

If you're stuck between two sizes, unsure about your cup size, have a longer or shorter torso, or simply want a second opinion, send us an email. Tell us your measurements, the style you're interested in, and what you're looking for in the fit, and we'll help you figure it out.