Size Chart

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Band

Cup

How to measure:
With a soft measuring tape and an unlined bra or thin tank top, start by measuring your under-bust, where your band will sit. Wrap the tape around your body, keeping it taut but not tight. Take a deep breath in and out to allow your rib cage to settle, take note of the measurement.
Then, grab your cross-cup measurement. Lay the measuring tape at the center of your chest, then measure across the fullest part of your breast, stopping where the breast tissue ends at your side.
With both measurements, see where the line up on our size chart, rounding up if you're between inches.

UNDERBUST MEASUREMENT 25-27" 27-29" 29-31" 31-33" 33-35" 35.5-37.5" 37.5-39.5" 39.5-41.5" 41.5-43.75" 43.5-45.75" 45.5-47.75"
BAND SIZE 30 32 34 36 38 40 42 44 46 48 50

Wired Bras

CUUP US UK Europe France Italy Australia Japan
- 28 28 60 75 0 6 60
30 30 30 65 80 0 8 66
32 32 32 70 85 1 10 70
34 34 34 75 90 2 12 75
36 36 36 80 95 3 14 80
38 38 38 85 100 4 16 85
40 40 40 90 105 5 18 90
42 42 42 95 110 6 20 95
44 44 44 100 115 7 22 100
46 46 46 105 120 8 24 105
48 48 48 110 125 9 26 110
50 50 50 115 130 10 28 115

Wireless Bras

CUUP 30 32 34 36 38 40 42
A - XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup
B - XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup
C XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup -
D XS / D-E Cup S / D-E Cup M / D-E Cup L / D-E Cup XL / D-E Cup 1X / D-E Cup -
E
(DD)
 XS / D-E Cup S / D-E Cup M / D-E Cup L / D-E Cup XL / D-E Cup 1X / D-E Cup -
F
(DDD)
 XS / F-G Cup S / F-G Cup M / F-G Cup L / F-G Cup XL / F-G Cup 1X / F-G Cup -
G
(DDDD)
 XS / F-G Cup S / F-G Cup M / F-G Cup L / F-G Cup XL / F-G Cup 1X / F-G Cup -
CROSS CUP MEASUREMENT 6.5-6.875" 7-7.375" 7.5-7.875" 8-8.375 8.5-9" 9-9.5" 9.5-10" 10-10.5" 10.5-11" 11-11.5" 11.5-12" 12-12.5" 12.5-13" 13-13.5" 13.5-14"
  30A 30B 30C 30D 30E 30F 30G 30H              
    32A 32B 32C 32D 32E 32F 32G 32H            
      34A 34B 34C 34D 34E 34F 34G 34H          
        36A 36B 36C 36D 36E 36F 36G 36H        
CUUP SIZE         38A 38B 38C 38D 38E 38F 38G 38H      
              40B 40C 40D 40E 40F 40G      
                  42C 42D 42E 42F      
                    44C 44D 44E 44F 44G  
                      46C 46D 46E 46F  
                        48C 48D 48E 48F
                          50C 50D 50E

Wired Bras

CUUP US UK Europe France Italy Australia Japan
- AA AA AA AA AA AA A
A A A A A A A B
B B B B B B B C
C C C C C C C D
D D D D D D D D
E DD or E DD E E E DD or E F
F DDD or F E F F F DDD or F G
G DDDD or G F G G G DDDD or G H
H H FF H H H H I

Wireless Bras

30 32 34 36 38 40 42
A - XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup
B - XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup
C XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup -
D XS / D-E Cup S / D-E Cup M / D-E Cup L / D-E Cup XL / D-E Cup 1X / D-E Cup -
E
(DD)
 XS / D-E Cup S / D-E Cup M / D-E Cup L / D-E Cup XL / D-E Cup 1X / D-E Cup -
F
(DDD)
 XS / F-G Cup S / F-G Cup M / F-G Cup L / F-G Cup XL / F-G Cup 1X / F-G Cup -
G
(DDDD)
 XS / F-G Cup S / F-G Cup M / F-G Cup L / F-G Cup XL / F-G Cup 1X / F-G Cup -

Bottoms

Size Waist Low Hip
1/XS 25"-26" 35"-36"
2/S 27"-28" 37"-38"
3/M 29"-30" 39"-40"
4/L 31.5"-33" 41.5"-43"
5/XL 34.5"-36" 44.5"-46"
6/1X 37"-41" 46"-50"
7/2X 41"-45" 50"-54"
8/3X 45"-49" 54"-58"

Bottoms

Size Waist Low Hip
1/XS 25"-27" 33"-35"
2/S 27"-29" 35"-37"
3/M 29"-31" 37"-39"
4/L 31"-33" 39"-41"
5/XL 33"-35" 41"-43"
6/XXL 35"-38" 43"-46"
7/XXXL 38"-41" 46"-49"

  • Tops & Wired ONE-Piece

    Size In Swim CUP Sizes Served
    1 30B / 32A / 30A
    2 30C / 32B / 34A
    3 30D / 32C
    4 34B / 36A
    5 30E / 32D
    6 34C / 36B
    7 30F / 32E
    8 34D / 36C
    9 38B / 40A / 38A
    10 30G / 32F
    11 34E / 36D
    12 38C / 40B / 42A
    13 30H / 32G
    14 34F / 36E
    15 38D / 40C / 42B
    16 32H / 34G
    17 36F / 38E
    18 40D / 42C
    19 34H / 36G
    20 38F / 40E
    21 36H / 38G
    22 40F / 42E / 44D
    23 38H / 40G
    24 42D / 44C
    25 42F / 44E

  • Why did Cuup size this way?

    CUUP Adaptive Swim Sizing is a unique system developed by CUUP to allow for one top to work for multiple sizes and still deliver the perfect fit and support you’re used to with your CUUP bra. Using our custom Slide & Set™ back adjuster, your CUUP swim top will fit with precision without any fussy ties or knots.

Wireless ONE-Piece

Size 30 32 34 36 38 40 42
A - XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup
B - XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup
C XS / A-C Cup S / A-C Cup M / A-C Cup L / A-C Cup XL / A-C Cup 1X / A-C Cup -
D XS / D-E Cup S / D-E Cup M / D-E Cup L / D-E Cup XL / D-E Cup 1X / D-E Cup -
E
(DD)
 XS / D-E Cup S / D-E Cup M / D-E Cup L / D-E Cup XL / D-E Cup 1X / D-E Cup -
F
(DDD)
 XS / F-G Cup S / F-G Cup M / F-G Cup L / F-G Cup XL / F-G Cup 1X / F-G Cup -
G
(DDDD)
 XS / F-G Cup S / F-G Cup M / F-G Cup L / F-G Cup XL / F-G Cup 1X / F-G Cup -

Lounge

Size Bust Waist Hip
XS (0-2) 32"-33" 25"-26" 35"-36"
S (4-6) 34"-35" 27"-28" 37"-38"
M (8-10) 36"-37" 29"-30" 39"-40"
L (12-14) 38.5"-40" 31.5"-33" 41.5"-43"
XL (14/16) 41.5"-43" 34.5"-36" 44.5"-46"
XXL / 1X (18/20) 43"-47" 37"-41" 46"-50"
XXXL / 2X (22/24) 47"-51" 41"-45" 50"-54"
3X (26/28) 51"-53" 45"-49" 54"-58"